I need a historian here, I think. Is there a particular reason a man would change his name from McLaughlin to Laughlin when immigrating to USA in 1776? Several of his children changed it "back" to McLaughlin, and I'm wondering if this was typical upon immigration, or if it happened earlier and he was actually born "Laughlin". (OR perhaps it was just recorded incorrectly). It would help greatly in trying to trace his roots in Sterlingshire, Scotland to know what I'm looking for! I would also like to know if immigrants had to "prove" who they were and what paperwork, if any, had to accompany them on their voyage. Thanks for your help. Janet