...Had 2 siblings Andrew and Albert...
Could the brother have been Robert rather than Albert (there is no birth showing for an Albert)?
There is this possible birth entry:
ROBERT LATTA
1929
Ref 644 / 1 / 78
Bridgeton, Glasgow
Like death for this Robert:
ROBERT LATTA
Age 46
Mother's maiden name ATHYA
1975
Ref 506 / 100
Old Kilpatrick, Dunbarton
Monica