As a Colin, I vote for one L. As I get older, more and more people are pronouncing it correctly. When I was little, I’d say it was maybe one in five.
To be fair, just the other day, a colleague at work called me “Collin” in an email despite the fact that my correctly spelled name was clearly visible in the “To” line.
I knew a Collin. And his comment regarding his name was as follows:
“yeah, Dad was #$%^& drunk at the hospital, and he’s the one who filled out the forms”
I have a somewhat conventional name with a bizarre spelling. I actually like it a lot, and I don’t mind in the least having to spell it out all the time. It gives me an excuse to be nit-picky and make sure the the other person did, in fact, get my name correct, letter for letter.
But in my case I was named after a girl that my parents knew when they lived abroad, so when people ask why I spell it the way I do, then I actually do have an interesting story to tell them. If I had to explain over and over, “Oh, my mom thought that extra J in there would be cute” I would not be so amused.
So if you wife doesn’t have any reason for “COLLIN” other than she likes the letter “L”, then I vote for “COLIN” as well.
And most of those are last names or AKAs. AKAs strike me as being either mistakes (on the part of some/all of the people responsible for giving the person credit), translations, or maybe even attempts to make searching easier for the spelling-impaired.
This kind of thing happens to me all the time, which I don’t mind, because I have to (grudgingly) admit that there are two equally legitimate spellings of my name, and I know people write e-mails fast and all that. But, I draw the line at an acquaintance of mine who addressed an e-mail to me spelled the wrong way…despite the fact that it is her name also, and she spells it the same way I do!
I would spell it with one L, just to try to avoid his having to say “Colin with two L’s” for the rest of his life, the way I have to say “Sarah with an H” every single time.