Within the UK and Ireland, the surname Willoughby most frequently occurs in England where it is carried by 1 in 10,061 people. The majority of those with the family name of Willoughby are to be found living in/around Greater London (approx. 12% of all UK Willoughby's), South Yorkshire and Oxfordshire. The name can also be found in Ireland with 1 in 22,156 people using it.
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