I have noticed that for some reason the name Donald can sometimes evolve to Daniel or David, whether it's transcription errors or to differentiate I don't know

Donald is definitely a Scottish name.
I was helping someone a while ago with the name McLaren.
I have a John McLaren b c1785 Edinburgh married to Charlotte (surname unknown) b England
Their children (all b Edinburgh)
Isabella c 1818
John c 1821
Sarah Tudor c 1821 - 1824 (only 1 with a middle name)
Gordon c 1826
Could only get info. from census, could find no baptisms nor a marriage for John & Charlotte.
Ring any bells

Annie
ADDED......
Sarah Tudor McLaren married William MacDonald 1853 Edinburgh
Children born Boston, Lincs
Allan Gordon Charles Hope MacDonald b 1855
Hector McLean MacDonald 1857
NO
John either in their names
