Nico wrote:
There are also some very similar pairs which should have been avoided - a Doran and a Dorian (yes, a shameless steal from Oscar Wilde), a Dev and a Deva (perhaps he was really another Tarrant), a Hana and an Anna. And I think there's a Keller and a Keiller.
No, the similarity makes them more realistic. We do meet a lot of people with similar names, so avoiding such echoes would be artificial.