I commonly use "Jesus Christ" as an interjection, but when I play D&D my DM playfully scolds me for using a swear that doesn't make sense in game. But "Saint Cuthbert" doesnt have the same weight. So I was wondering if the real life historical figure had a first name I could throw in there.
Cuthbert was his personal name; he would have been known as "son of ..." (his father's name is apparently unknown) or with an association with a place (which would likely have changed during his life). "Saint Cuthbert" is analogous to "Jesus Christ" since "Saint" and "Christ" are both titles and Cuthbert and Jesus are personal names.
edit: thanks for the gilding!
Christ isn't a name but a title. In Greek it means the anointed one. So we call Jesus by his name and title.