Ben Affleck and Matt Damon
They write together, they act together... is it really a surprise that they are distantly related? The New England Genealogical Society discovered that the “Good Will Hunting” co-stars are tenth cousins, once removed. Damon and Affleck are both descendants of a New England bricklayer named William Knowlton Jr. —XFINITY Entertainment Staff (Photo by Ethan Miller/Getty Images)
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