From Muriel Leo’s (nee Oliver, 1917-1998) Family Tree.
Second name from Janet (Jan) Kelly, great-granddaughter of Mary Ann Carroll, Mary being a daughter of John and Talitha (nee Hutchings) Carroll/Carrel.
Year of birth (1885) estimated from http://paperspast.natlib.govt.nz Papers Past, Wanganui Herald, Volume XXVIII, Issue 8427, 20 December 1894, Page 2 where Lionel was in class Standard 3.

Place of burial from Denise Moody in an email dated 22 October 2017. (Denise is the wife of Robin Moody. Robin’s father, Ernest Arthur Moody, was adopted. Ernest was born “James Campbell Lumsden ROBERTSON”, his biological mother being Gertrude Eleanor ROBERTSON b.1887. Gertrude later married Lionel Ernest Carrel b. 1884).

Image from Wanganui Collegiate School Past Pupils information from Denise Moody in an email dated 22 October 2017.

Year of death (aged 72 years), country of death, from official birth search on New Zealand BDM website in May 2018.

Year and country of birth, from Birth search on New Zealand BDM website in June 2018:
1884/6573. Carrel, Lionel Ernest. Mother: Eliza. Father: Charles

Country of marriage from Marriage search on New Zealand BDM website in June 2018:
1915/6866. Bride: Gertrude Eleanor Robertson. Groom: Lionel Ernest Carrel

Result from Death search on New Zealand BDM website in June 2018:
1957/27060. Carrel, Lionel Ernest, died age 72Y

Full date of birth of 26 September 1884 and full date of marriage from Denise Moody in an email dated 20 July 2018.

Date of birth confirmed by incrementally changing the birth date range in BDM Search.

Date of death determined as 31 March 1957 confirmed by incrementally changing the death date range in BDM Search.