There is Charles Clague in 1851 Lezayre census

Kidderland
Edward Clague head married 30 farm lab b Lez
Elizabeth wife married 30 b Lez
James father in law widower 67 weaver b Lez
Charles son unmarried 11 scholar b Lez

The IGI has no marriage nor christening for Charles--not in parish extraction anyway.
There is a private entry indicating Elizabeth is Quayle but who knows!!