I was named for my paternal line great-grandfather who passed away 5 years before I was born, at the age of 93. There are several uncles and cousins named Carl, though, and so I use my middle initial as well. It was his, but none of the relatives wound up using the same middle name, so I lucked out. Google searches on my full name still bring up photos of the old man.
My first post-Ph.D. teaching position had a Carl there already, a few years from retirement. So of course he was Old Carl, and i was New Carl. Then we hired a Karl. He became Young Karl (he was, and quite babyfaced as well). Then there was Carleton in the administration who went by Carl.
We called him "fuck Carl", for reasons that would be obvious if you ever heard him open his mouth. He was the one who tried to argue with aa group of mathematicians that a 3% merit pay raise, when distributed, wouldn't average to 3%.
"Sure it would - some will get more, some less."
"No, no, 3% is the ceiling."
"But you got 3% of the salary pool to distribute?"
"Yes."
"Then where's the rest going?"
"There is no "rest". we're distributing it by merit".
Fuck, Carl! Meetings with him were like "Who's on first".