John and Mary and eight children arrived in New Zealand in 1843 on the Essex.
First and last name, year and place of birth from Ross Rogers, descendant from the grandfather of Ambrosine Rogers b. 1854 (whom married Frank Richard Oliver b. 1850), in an email dated 10 November 2016.

Full date of birth, date of death, date of marriage from Ross Rogers, in a print-out of his John Rogers/Jane Faull family tree received 16 November 2016.

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Court proceedings for the murder of Mary Rogers (nee Faull)
Taranaki Herald 28 March 1885, page 3.
SUPREME COURT.
Auckland, March 1, 1855.
Joseph Cassidy was charged with assaulting Mary Rogers at New Plymouth, on the 14th of September, of which assault she died. In answer to the indictment, the prisoner said that she had been a long time (for two years) trying to take away his life, by means of food and drink, and he had therefore taken away hers. The prisoner did not appear to understand the charge preferred against him, and at first pleaded guilty, but the Chief Justice having explained more fully the charge of Wilful Murder, and the prisoner slating that be had provocation, the plea of Not Guilty was entered.
Victoria Rogers, of New Plymouth, daughter of Mary Rogers, widow, deceased, knows the prisoner. who lived with her mother. He lived with her mother a long time. Recollects the time her mother died. The prisoner murdered her. Her mother went out in the morning to milk. Prisoner took a knife, she and the prisoner being left in the house. He put a knife in bis pocket, with which he used to kill the pigs. Mother came home after the prisoner put the knife in his pocket. Mother had her breakfast, and asked the prisoner if he would have any. He said No. After breakfast mother washed up the things and sat down to sew. After the sat down the prisoner took the knife out of his pocket and stabbed her. The prisoner did not say anything, but stabbed her In the side. (Knife produced.) I think that is the knife. After the prisoner stabbed my mother, she ran out the side door and screamed. I saw him stab her once in the house, but not afterwards. I did not bear the prisoner say anything before or after the stabbing ; nor yet that my mother said anything.
Examined by tho Court : It was on the right side my mother was stabbed. I think this it the knife. It it very much like it.
By the Foreman of the Jury : Never heard the prisoner and her mother quarrel, or say he would kill her -
R. Jackson sawyer, of New Plymouth, recollects the 14th of September; on that day, about 11 o'clock in the forenoon, was walking outside his house in company with John Wright, Joseph Robertson, and William Bundy. My house is distant about 100 feet from Mrs Rogers. Victoria Rogers ran past my gate screaming. Wright asked her what was the matter? Going out of my gate I saw Cassidy with a knife in his band raised above his head. I stooped down and picked up a piece of paling, and when I raised my head he had the knife raised a second time. I did not see the woman at that time. When I got over to the gate leading to Mary Rogers' house I saw Cassidy draw the knife out of her left side ; blood followed the knife, and spirted all over his wrist and arm. Robertson standing by me told him to drop the knife. The deceased said nothing. I raised the paling I had in my hand, and likewise told him to drop the knife. He dropped the knife, and I went past him to Mary Rogers. When I got close up to her, she rose and staggered away into the house, and threw herself partly on the bed. I asked her where she felt the greatest pain. She said he has killed or murdered me, I can't tell which. Coming out of the house I saw the prisoner being led away by a company of men. The knife produced is the knife. I had known it before.
By the Court : I had been walking about for about five minutes. I had been in my house from breakfast time. I heard no noise, disturbance, or quarrelling previously. Should have heard it had there been any, unless it was inside the house. I have used the knife off and on for the last eight years killing pigs. The prisoner had her down outside, kneeling on her with one knee, and stabbing her.
By the Foreman of the Jury : The prisoner if a peaceable man, but drinks occasionally. John Wright, farmer, examined ; Recollects the 14th September. On that day, about 11 o'clock, I was standing abreast the last witnesses house in company with him, J. Robertson, and W. Bundy. I heard two children crying and screaming, and saw Victoria Rogers, and Robinson's daughter Rebecca. I looked in the direction of Mary Rogers house, and saw the prisoner stabbing Mary Rogers outside the door with a knife. This is the description of knife. One or two times he stabbed her in the side. The third time he made a cut or stab at her, the had her arm up ; she dropped her arm and fell. His hand was going at quick as thought. He stabbed her thrice during the time I said, " Ob, my God ! he is stabbing the woman." Jackson and Robinson went past me. We all hurried up at quick as possible. I called some natives to assist us to secure the prisoner. I did not hear prisoner or deceased say anything. When I got up the knife was not in his hand, His hand was covered with blood, and it was dripping off his fingers. There were several spots of blood on his trousers. I assisted to secure the prisoner. He was quite calm and collected. Mary Rogers died about 8 o'clock.
R. Coleman, private New Plymouth police, having looked at the knife, identified it. It came into his possession on the 14th September. John Wright and some natives brought a man and gave him into my charge at a murderer. The knife was given me by Robinson, when I took the man Into custody coming into town. He made no statement when I look him in charge.
Henry Halse, Inspector of Police, New Plymouth, knew the deceased Mary Rogers. I saw her at her own home between 2 and 3 o'clock in the afternoon of the 14th September. I went there in consequent of information. She appeared to me to be dying. The deceased recognised me as toon as I entered the room. She made a statement in reference to the injury she had received. When the made the statement I cannot say if she believed he was in a dangerous state. The statement made to this witness could not be received in evidence.
Dr. Kingdon, of New Plymouth, recollects the 14th Sept. On that day I was called to see Mary Rogers between 11 and 12 o'clock in the forenoon. She had been laid on the bed in a state approaching to faintness. Her clothes about the body were saturated with blood. I then preceded to strip off the dress in order to suppress the flow of blood. Then were several wounds, two on each arm little more than scratches ; but other two were deep fleshy wounds, one across the wrist, the other on the fleshy part of the arm ; five others about the chest, three hardly penetrating the skin ; two others were penetrating wounds ; one in which the instrument that had been used had struck upon one of the ribs, and therefore did not penetrate the chest : in all there were nine wounds about the body. Two punctured wounds were on the left side ; the mortal wound was that which penetrated between the sixth and seventh ribs. I endeavoured to stop the flow of blood, and stayed about an hour and a half. She was almost pulseless, from fright and exhaustion, complaining much of the left side, not arising from the wounds, but some two or three inches below - that pain I attributed to the blood that had settled through the chest. I left her in a state of exhaustion complaining of the left side, and did not see her again alive. I saw the body the next day, and learned she died the preceding evening. I examined the body, and found a wound between the sixth and seventh ribs of the left side, and of about five inches. This knife might have inflicted such a wound, which would cause death. It penetrated not into the cavity but into the muscular part of the heart, and this accounts for her surviving seven or eight hours. That wound was the cause of her death.
By the Court : These wounds were only on the left side of the body. I have seen the prisoner once or twice, but have no knowledge of him personally.
This closed the case for the prosecution.
The Prisoner having been asked if he had any thing to offer in his defence, said that owing to a difference of religion, this occurrence had taken place. The deceased had taken different opportunities of poisoning me in my food and drink. I had to leave the house on several occasions, which it would be grievous for me to mention ; but it was predestined for me to return. Occurrences have happened, and I have been compelled to leave the house. She asked me would I marry her? I said let your husband be dead 12 months. She said you are mine, but I did not know the meaning of the word ‘mine’ at that time. After being in prison at New Plymouth, I wished to have a clergyman of my persuasion, and also in Auckland, but have not been allowed. I thought it was allowed for every man to have his confessor. I did not intend to commit murder, and trust the jury will be merciful, and do me justice.
The learned Counsel for the prosecution and defence having addressed the jury, His Honor the Chief Justice summed up at follows :-
After commenting on the evidence, the Chief Justice said - In the prisoner's demeanour and conduct before you today there have been some indications of a peculiar cause which may have had some part in producing this deplorable result. The evidence before you furnishes no means of judging whether any menial delusion existed before the crime was committed, or whether the appearance of such delusion may not have been assumed for the first time today. Even if it existed before the crime was committed, it is to be remembered that though the existence of a delusion of this kind may diminish the atrocity of the crime in point of morality, and may affect the question whether the verdict should be fully carried out, yet it cannot justify as in this place in relaxing the sanctions of the criminal law, or in withdrawing the protection of the law from those who may be exposed to danger from persons subject to such delusions. By our law no degree of delusion or insanity can exempt a man from the penal consequences of his crime, unless it be such as renders him unable to discern that the act he is doing is contrary to the law and subject to punishment. It it plain that to exempt a man from punishment on any lighter grounds would be to remove from such persons a restraint which, even in their unhappy state, it found to be operative as a check on minds not wholly sane, and which is, in fact, as salutary for themselves as it is necessary for the public.
The Jury pronounced the prisoner Guilty.
Sentence:- You, Joseph Cassidy, have been Indicted for the wilful murder of Mary Rogers, and have been found guilty. It remains for me to pass the awful sentence of the law. But before that sentence can be carried into effect, it will be necessary to submit your case to the consideration of the Officer administering the Government of the colony and his Executive Council. Meanwhile it will be your wisdom to prepare yourself, as one who may be shortly called to appear in the immediate presence of the Maker and Judge of all men. The sentence of the law Is, that you, Joseph Cassidy, be taken to the place from whence you came, and thence to the place of public execution, at such time as his Excellency the Officer administering the Government may appoint, and there be hanged by the neck until you be dead.
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Brian Oliver of nzolivers notes from the testmony of the doctor above, “I saw the body the next day [15 Sep], and learned she died the preceding evening” that the date of death would be the 14th of September? However, a check with a death search on New Zealand BDM website in October 2018 found:
1854/287. Rogers, Mary, died age 49Y

And, while on BDM Search, by incrementally changing the date range for the death, a full date of death of 16 September 1854 [as earlier supplied by Ross Rogers] is confirmed.

Second given name of “Jane”, place of marriage, sailed on the Essex departing Plymouth on 3 September 1842 and reached NZ on 20 January 1943, from information forwarded by Robert (Robbie) Craig Marshall-Smith, in an email dated 1 October 2023. Reference is "John and Mary Rogers - settlers from Cornwall" written by Kathie Furlong.
Robbie is the x2 great-grandson of John William Alldridge and Freida Linda Rogers. Frieda’s older sister, Ambrosine, married Frank Richard Oliver, sone of Samuel Oliver 1819-1873 (The Miller).