I'm seeking information on the parents of Peter CAMPBELL. What were their names?

Peter and wife Margaret (nee' CAMPBELL) emigrated from Loch Tayside, Perthshire, Scotland in 1817, settling in Drummond Twp., ONT. Peter CAMPBELL died in Drummond. c. 1848.

The parents of Mgt. were Jean McDIARMID and Peter CAMPBELL. (The name of Mgt.'s father and husband were the same).

Seeking any leads or information on immigrant Peter CAMPBELL's parents back in Scotland.

Thanking you,
Kathleen