First initial, second given name, initial (E May V McKoy), from Muriel Leo’s (nee Oliver, 1917-1998) Family Tree.

First and third given names, year and country of birth from search on Australia BDM Victoria website in November 2018:
MCKOY, Emmeline May Vic. Birth. Father’s Name: Pat Hugh. Mother’s Maiden Name/Given Name: Florence (Goddard). Reg Year 1893. Reg. no. 21036

Place of birth from Findmypast Australia Births and Baptisms 1792-1981:
McKoy, Emmeline May Vic, 1893. Victoria Births: Cheltenham, Victoria, Australia

Full third given name, year and country of marriage from search on New Zealand BDM website in November 2018:
1922/6689. Bride: Emmeline May Victorine McKoy. Groom: James Forsyth Sinclair

Full date of marriage of 4 September 1922 from further searching in November 2018 on BDM Search by incrementally changing the date range for the marriage.

Year and country of death, from death search on New Zealand BDM website in November 2018:
1950/19748. Sinclair, Emmeline May Victorine, died age 56Y

Full date of death of 15 June 1950 from further searching in November 2018 on BDM Search by incrementally changing the date range for the death.