First two given names from official Birth search of children on New Zealand BDM website in June 2018:
1859/5163, Terrill, Elizabeth, Mother: Mary Jane, Father: Joseph
1862/7702, Terrill, Thomas, Mother: Mary Jane, Father: Joseph
1866/12650, Terrill, William, Mother: Mary Jane, Father: Joseph
1868/16406, Terrill, John Richards, Mother: Mary Jane, Father: Joseph

No record of marriage could be found on the New Zealand BDM website as at November 2018.