Yes, I spelled Kieth the way we were going to spell it. My husband's middle name was Kieth, which he was told by his mother was a Russian variant of Keith, pronounced "Kee-ayth", and that his father (in college at the time and editor of the poetry magazine on campus) had been really in to everything Russian when he was born, and that's why they picked it (along with naming him Ian, when his father refused to let Adair name him after him - John). After he died, his mother's brother informed his sister and I that the name was Keith, not Kieth, and that *he* had picked it out when Ian was born. At the funeral, his father's father informed me that Ian was named after him, because Keith was his middle name. Amazing how one name can have so many meanings... or how many people you can fool into thinking you named someone after them! ;-)
No, I never bothered to check the birth certificate.