Just love coincidences I have an Ebenezer Auld married in 1828 to Elizabeth Strathearn in Scotland their son Ebenezer came out to NZ and died there.
Your Elizabeth Barnes Auld married Thomas Sayers in NZ 1939/04121
There was a John Andrew Auld born 5 Oct 1893 in Scotland son of John Auld and Isabella Mackie Stephen, you would need to check the NZ marriage and or Death certificates to see if he is the same man. The parents married in 1887 in Stonehaven, Kincardine
There was an Elizabeth Barnes Strathearn born 27 Sept 1893, 121 High Street, Ayr, Ayrshire, her mother was Maggie Strathearn, father named as Matthew Laughland
matthew laughland and margaret strathearn married 1897 at 90 grat Hamilton Street, Glasgow, they were both from 144 high street, Ayr.