I think [name_m]Burton[/name_m] and [name_m]Sullivan[/name_m] both sound better with the other names you listed. [name_m]The[/name_m] -n ending being so similar doesn’t flow as well as say [name_m]Burton[/name_m] [name_m]Jude[/name_m] or [name_m]Sullivan[/name_m] [name_m]Theodore[/name_m].
I’ve never considered [name_m]Burton[/name_m] before. It’s got a cool vibe.