I haven't worked out who these Douglas people are? A different Gabriel to Gabriel 1784? See below

This looks to be Gabriel in the 1841 census. I'll list as is showing on FreeCen rather than the other index. Everyone showing as born in the county:
Gabriel Douglass 55, inn keeper,
Jane Douglass 45
Richard Douglass 25, Independent
Ann Douglass 5
Marry Gerran 25, servant
James Gibb 20, printer
Margt Nouat 10
Marry Nouat 15
Marry Wallace 15, servant
John Anderson 20, coachman
Address: Tempelhill, Dundonald Ayrshire