I agree with Hurworth
On logistical reasons . As well as statistics
Might be an advantage that he was a bigamist if he had children with both wives . And you match their descendants
I asked about ethnicity because ancestry does divide English into regions for example my mother's English percent shows as being Cheshire
A friend's shows as being Cornwall
If EM had a percentage of Scottish or Irish or Welsh this will show up distinctively in your shared matches and yourself
