Cayto/Kayto

I had a very vivid recollection that leads me to believe that at one point I had a baby brother named Cayto.
I've been trying very hard to remember anything I can about him, but all that I've got so far is the name, the image of a child (probably no older then a year), and the certainty that he was my father's child.

I looked up the name, and apparently it's a variant of "Cato", which is latin for "all knowing".

I'm not so sure about Cato/Kayto/Cayto but I have come across someone who's name was Karto. I know this is probably not helpful whatsoever but it might ring a bell? XD

~Capsha