McGlynn/McGlinn derivation
To the world wide McGlinn/McGlynn Clan ...
The Irish clan was called McGlinn until the troubles when the family wanted/were forced to show where their loyalties lay ... therefore the Northern Counties became McGlynns and the Republicans remained McGlinns.
This was the explanation guiven to me by my Grandfather ... Frank (Francis) McGlinn.
Unless anyone has a better one ... ???