Every time I hear/see "Orca", I think of Oprah Wimfrey... not because of her weight (gosh, I'm not that kind of prejudice!), but because her name was supposed to be "Orpah"...a name from the bible. However, whoever did the birth certificate messed up. Or at least that's the story I've been told...whether it's true or not, I always associate killer whales with famous talk show host as "orca" and "orpah" sound almost the same LOL
Names being messed up on legal certificates happen quite a bit, I think. A friend was supposed to be "Lori", but ended up "Lora". On my marriage certificate my ex father-in-law ended up being "George Brain", rather than Brian.