Name, year and place of birth and death from “McCaul Family Scotland” (first compiled in 1991 and updated to 2002) by Marcia Barbara (Barbara) McCaul, Canada (b. 1932, d. 2002). Barbara was the great-great grandaughter of Gilbert McCaul (b. 1765) and Janet McFarlan (b. 1770). Brian of nzolivers.com is the great-great-great grandson of Gilbert and Janet.

New Zealand Electoral Roll - Wellington Suburbs General Roll for 1938
McCaul, Berilla Mary Phoebe, Cashmere Ave., Khndllh., mard.
McCaul, Douglas George, Cashmere Ave., Khndllh., secretary
McCaul, Malcolm Graeme, 75 Cashmere Ave., Khndllh., travr. [Son of Douglas & Berilla]
McCaul, Marion Beryl Elaine, 75 Cashmere Ave., Khndllh., spinster [Daughter of Douglas & Berilla]

Result from marriage search on New Zealand BDM website in March 2022:
1910/1043. Bride: Berilla Mary Phoebe Colyer. Groom: Douglas George McCaul

Full date of marriage of 10 January 1910 confirmed from further searching in March 2022 on BDM Search by incrementally changing the date range for the marriage.

From Papers Past found in September 2023:
NEW ZEALAND TIMES, 11 JANUARY 1910
McCAUL - COLYER.
At St. Thomas's Church, Newtown, yesterday afternoon. Miss Beryl Colyer, daughter of Mr J. R. Colyer, Registrar of the Supreme Court, Invercargill, was married to Mr Douglas G. McCaul, son of Mrs M. M. McCaul, of Wellington. The Rev. Walker performed the ceremony, and Mr P. B. Crouch acted as best man. The bride, who wore a cream crystalline semi-Empire frock and a cream hat," was given away by Mr G. Gillon, of Wellington. Miss Barry was bridesmaid, wearing a grey frock and rose pink hat.
After the ceremony a reception was given toy Mrs Alcorn at her residence in Clyde quay.
Mr and Mrs Douglas McCaul will reside at Khandallah.

Died - Korimake Rd., Days Bay, Wellington, New Zealand