While I'm here, I've heard from another person with the first name Kiloh (the maiden name of a great-grandma in Aberdeen) who passed on a bit of etymological info:

Yes, Killoh (with two l's) is derived from the same "Kellog" as mine. Even going further back it's from Cel (Celtic?) which refers to the bog around which the family was established. So the name actually translates as "from the swamp" yippee!

This explains why the name is sometimes written with two l's.

B-)