Guess it couldn't have been birth 1805 if he married 1815.
I have a Donald 1786 b Wick and many more dates. Do you know your Donald's parents names.
I am searching family related to John Budge and Sutherland Cooper m 1798 Canisbay. Had at least 6 children William Donald John Charlotte Janet and Margaret b 1798 - 1815. Possible parents for John Sr above are Donald Budge and Christian Barnie (Wick) or John Budge and Margaret Brock (Stromness). Still searching