In my Jack family I have variously; Muckle, Dusty and Dusty Ludovic. The T-names/by-names were not always carried on father to son, so you had the father and his family known as Donald Jack or Muckle Jack and the son, for example, Lewis Jack or Dusty Jack.
Avoch had a large population of Jack, Patience and McLeman families to name just a few and they all intermarried, marrying cousins etc. By the time you're back researching in the early 1800's it is starting to be a challenge to keep them all straight. You may be lucky and have ancestors that kept records - family bibles etc, mine didn't

Regards
Joy
