Jebediah, Jack...same difference

I was working on this plot fic, and since it has plot it also has characters who are neither Lee nor Kara.  So I found myself writing Colonel Fisk.  Now, I couldn't remember his first name, and did not have access to the wiki at the time, so...I gave him a new name.  Many hours later, I was quite disappointed to find that he does have a name in canon.  Jack.  The thing is, I'd become quite attached to my name for him.  I think it's very fitting.

What say you, flist?  Can I discard canon this once?  Can anyone take the scene seriously if I call him Jebediah Fisk?