I love Weston!
I wonder if Davey is too cowboy (if one can be) with Weston already having that sort of feel? Davy Crockett? I do like it though, it’s breezy and confident, and it’s the easiest to say. I like Roscoe too but I think it almost competes with Weston rather than complements. Levi is cool and nice they then both have L middles.
I think with Weston you could go more classic (as it’s more distinctive, like Lux), so:
Weston Charles
Weston Elias
Weston Piers
Weston Rhys
Weston Hugh
Weston Clive
Weston Everett
Weston Timothy (link to Dorothy)
Or if Weston is classic - and it does have that vintage feel similar to Dorothy, then maybe:
Weston Vance
Weston Vale
Weston Kit
Weston Arlo
Weston Jules
Weston Leif
Weston Kai