From an article by Bimpe Archer in The Irish News:
"Mr Biden's great-great-great-grandfather Edward Blewitt, a brick-maker and civil engineer who helped to map Ireland, emigrated from the town 170 years ago, he had left some family behind.
"It wasn't hard to spot his distant cousin. The plumber drives around town with a van emblazoned with `Joe Biden for the White House and Joe Blewitt for Your House'."
From later in the same article: "Despite the surname Biden being first found in 13th century Hampshire before fanning out to Gloucestershire and Somerset and a family tree with branches in England and France, 10 of the President-elect's 16 great-great grandparents were born in Ireland - leading to more than one family homestead in the Emerald Isle."
You can read more about Joe Biden's Irish and English ancestry at: https://bit.ly/359xa9b.