There were three sisters in my home town named Faith, Hope and Charity -- I kid you not. And then there's Constance.
Wasn't one of the pilgrim preachers in the Mather family -- can't remember if it was Cotton Mather's father or brother or son -- named "Constant"? My hazy memory tells me there were a number of others in that time period with similar names, but none will come far enough forward to the identified.
And let us not forget the popes -- Pius... Any others?
How 'bout the author of Galveston Flood, Sinkiller Griffin?