Names Bacon and Fagan

The very curious and interesting information which has come to light in the replies to my Query about the origin of the patronymic Bacon, emboldens me to put another question upon the subject. I have long suspected, but have been unable to prove, that the names Bacon and Fagan were originally one and the same. Bacon, it appears, is a Saxon word, meaning "of the beech tree." Fagan, I presume, is as undoubtedly from the Latin "de fago," "of the beech tree." The approximation of sound in these names is sufficiently evident. That the letters C and G have been commonly convertible between the Latin…