In the links below are details of the 27,181 UK Births downloaded from FreeBMD on 4th December 2017, which will be the basis and starting point for the One Name Study.
These will be reproduced below in different tables as the file is too large to be held in just one.
Having the Mother’s maiden name in later births will help with locating names within other trees and DNA matches where they don’t actually have a Croft in their tree.