DNA and the Bolling/Bowling/Bowlin/Bollin/Bolding Surname

yDNA results from the Tapscott DNA Project show a very close paternal genetic relationship between at least some individuals with the surname Bolling/Bowling/Bowlin/Bollin/Bolding and the Tapscotts tested. Despite extensive research using classical means (i.e., paper) I have been unable to find a connection. The relationship is so strong that it appears that a major Tapscott progenitor had a father named "Bowling" (or variant thereof), or the converse. This could have happened either here (both families are from Virginia) or before arrival in America (both families are British). As you all know, the earliest Tapscotts arrived from England in New Jersey around 1690 and in Virginia in 1700. Of course it is possible that the connection between the two families occurred prior to the common use of surnames (i.e., prior to 1400). I am searching for a connection.