Onmund is an adorable little strumpet, isn't he? I married him on my first character, but I actually wish I had gone for Calder instead. On my current character I just can't find anyone. I want a male Redguard but there aren't any.
On my latest character, I actually used the console to marry Aicantar in Markarth (worked great, and he's a pretty good follower too). I'd already had previous characters marry Onmund, Vilkas, Farkas, and Revyn Sadri (he's slightly buggy, still tells me I'm not supposed to be in his shop, sometimes

). None of the other marriageable guys interest me much (Balimund is a sweetheart, yes, but I can't get over the dirty face). Plus I wanted a High Elf for my High Elf. Hmm, I wonder if the console trick would work on Shadr in Riften?