Can't say I was aware of Farmer's books or his meteor theory.  If you're wanting to look up the name "Lebowski" I would suggest doing searches for Lebowski surname or even ski suffix surname .  The name is definitely Polish in origin.  I've heard that the "ski" suffix was one of those Ellis Island modifications.  If you didn't know, a lot of last names got changed when people immigrated due to the lack of caring, literacy, etc of the workers processing immigrants.  In fact, if you've seen the special features on the special edition of Office Space, there's a deleted scene with Bob Slydel (John C McGinley) commenting on Tom Smykowski's last name.  You could also try searching those ancestry/surname sites that are all over the internet.

Good luck and thanks again for linking to us.

Chalupa