My first last name combo is so incredibly common I went to University with another girl who had the same last first combo.
On the other hand my mum's double barreled surname combined with her first name means she's the only person named that in the whole country. the only reason i didn't get her surname was bc she thought it'd be too difficult for a 5 year old to spell.
also my local MP is called David Davis so 10/10 his parents.