I think [name_m]Robin[/name_m] and [name_m]Desmond[/name_m] are both genteel and for me, go better together in a timeless and sophisticated way.
[name_f][/name_f][name_m]Cedric[/name_m] has more regal/ friar/gothic/ [name_m]Harry[/name_m] [name_m]Potter[/name_m] vibes and with [name_m]Robin[/name_m] is possibly too self-conscious and stylised for my taste (ie feels a bit more in to fantasy/Batman realm for me). But they feel adventurous together.
[name_f][/name_f]But I also think [name_m]Cedric[/name_m] has a lot of pluckish charm. So you can either go gentle (dignified and nerdy) [name_m]Desmond[/name_m] or more stylised and fun [name_m]Cedric[/name_m]?