Sibling boy name

Im due any day now with our third and we still havent decided on our boy name. My first is [name_u]Tristan[/name_u],second is [name_f]Fiona[/name_f]. If we have a girl then we will name her [name_f]Maeve[/name_f]. If we have a boy, I picked [name_u]Rhys[/name_u] but my husband is meh. He has not suggested any other name to me. Does [name_u]Rhys[/name_u] work well with [name_u]Tristan[/name_u] and [name_f]Fiona[/name_f]? If not, please suggest a few names. Thank you in advance.

[name_u]Tristan[/name_u], [name_f]Fiona[/name_f], and [name_u]Rhys[/name_u] or [name_u]Tristan[/name_u], [name_f]Fiona[/name_f] and [name_f]Maeve[/name_f] go so well together! They’re all Celtic and recognizable but not super popular. I like all the names individually too. They sound fresh and spunky, but also classy and with history.

[name_m]Treyton[/name_m] would be good for a boy I think and [name_f]Maeve[/name_f] for a girl does sound cute also