How common is your surname?

How common is your surname? The fact is everybody will have a ‘common’ surname somewhere in their family tree.  I’m currently researching for those Welsh ancestors.  This branch is made very difficult by them having ‘common’ surnames. The top 20 surnames in Wales are: Jones (5.75) Williams (3.72) Davies (3.72) Evans (2.47) Thomas (2.43) Roberts (1.53) Lewis (1.53) Hughes (1.23) Morgan (1.16) Griffiths (0.96) Edwards (0.93) Smith (0.85) James (0.82) Rees (0.81) Jenkins (0.69) Owen (0.67) Price (0.67) Phillips (0.65) […]