Anne Boleyn

The ancestor of the man who gave birth to Sonichu?

Though, it would explain why she was called a witch.

“	As a matter of fact, among my, uh, mother's side in the uh, ancestrial traits [sighs] we have uh, we have been traced down to Daniel Weston, who was on the main--Mayflower voyage. And, uh, beyond him, Anne Boleyn, who was the uh, one of H-Henry VIII's...King Henry VIII's wives, who gave birth to, uh, Queen Elizabeth I.	”
Captain's Log, Stardate November 7th, 2007

Anne Boleyn (1501/1507–19 May 1536) was Queen of England as the second wife of King Henry VIII. Chris claims to be a descendent of her from his mother's side of the family, via Daniel Weston who was on the Mayflower. Chris deduces from this that he is also descended from Mary Boleyn (Anne's sister, not mother) and the 1st Earl of Portland (Richard Weston, who was born later).

Apparently, Chris looked up Richard Weston and Mary Boleyn on Wikipedia to find a link between them. This suggests that Chris made it up himself without being told by his mother.

Not possible

Aside from the fact that Daniel Weston did not exist, Ann Boleyn had only one daughter, Queen Elizabeth I. It is not possible Chris could be descended from her, because, like Chris, Elizabeth I was a famous virgin with rage. Luckily YouTube wasn't invented in the 16th century, nor was Queen Elizabeth known to sit around the Ye Olde shoppes with idiotic signs.