I'm thinking maybe a more unusual Biblical name for that era, like....
Joel.
Joel is like the quintessential "seems charming but is actually a cold hearted manipulative jerk" name to me.
Luke and
Gabriel could also work.
Ethan,
Roy,
Brandon and
Bruce seem to belong to the wrong time period and it's distracting.
Edric,
Theobald and
Dorian sound too European.
Mythological/classical names were pretty common then for both upper class types and slaves, so
Leander and
Ulysses would work, but I think
Ulysses is too evocative of
Grant.
Leander Exeter is ok but I don't think it sounds very nice, it's choppy. That -er -er sound is meh. Maybe something like
Hadrian Exeter,
Juvenal Exeter,
Marcus Exeter,
Tarquin Exeter.
Ashford and
Silver are interesting options because they bring to mind the strong tradition of using surnames/maiden names. Ashford Exeter does sound pretty evil.