Travis' or Travis's

[zinfamous]

Travis'

seriously...it's just easier that way.

there's an entire nation out there, where all males' names end in "s"

it would suck for them, to not have this figured out. Fortunately, though, this nation is not cursed with English, and such forbidding grammar.

 

[A Casual Fitz]

I vote Travis's since Travis is singular.

 

[CZroe]

Necro, but no one mentioned Oxford. Oxford-English says Travis's is OK. Pretty much everything else says otherwise unless you are talking about plural-possessive.