DHs name is beyond common- 4 of them in his class at school. Middle name probably even more common. 2 apostles. My name is unusual, but only in that it is a very common shortening of a few names, but my name (yes,the name on my passport and my birth certificate, thanks for checking travel agents, but I do know my own name, and it can just be ...).
DS will always have to repeat and spell his name. It is a good, solid, Welsh name, but we lived an hour from the Welsh border and no-one could spell it if they heard it, or pronounce it if they saw it written. We now live in Sweden, and the Welsh spelling does not translate, even if his name is very close to a relatively common Swedish name. DD I thought would have an uncommon name, too, but it became very common the year she was born. (Seriously, who names their child after a transsexual in a Kinks song, or a showgirl) DD2 (due in Dec) will have a very unusual name - letters that don't exist in English, only 1 registered in Sweden (an 88 year old). Much more common with a different spelling, there are a few in England and about 100 (still mostly older) in Sweden.