OK - bit of background.
I'm not looking to get into genealogy [ASIDE] why isn't it geneology? [/ASIDE], or research my family tree or anything.
My brother-in-law has just become a great-uncle, and my sister a great-aunt, because one of his brothers has become a grandfather.
I'm curious to know what relation this new person is to my son. Clearly no blood tie, but there's kinship of some sort, and I wondered what it was - some sort of x'th cousin y'th removed, I guess.
I was just looking to find someone who understands how these things work, or could point me at a website where I could define a chunk of family tree and have it tell me what the relationship is.