I love
Rhys! It's my husbands name, and it's interesting and different while still being familiar enough for most people to manage. I also really like
Vincent and
Martin.
My top pick would be
Rhys Vincent. Or, if you did have twins, maybe
Henry Vincent and
Rhys Charles? I think they flow really nicely.
Other ideas:
Rhys JamesRhys GregoryRhys GarethRhys ThomasRhys Benjamin
Vincent David Vincent PeterVincent AllanVincent MaxwellVincent LouisVincent JuliusVincent Owen
Martin Jeffrey Martin TheodoreMartin AaronMartin VictorMartin EllisMartin NicholasMartin Alexander