Is Abigail Adams related to Samuel Adams?

Samuel Adams and John Adams were second cousins which means they had the same great-grandfather and grand-mother. Their fathers, Samuel, Sr. (1689-1748), and John, Sr. (1691-1761), respectively, were...

Abigail Adams was related to King George the Third, a distant cousin of his. She was also cousin of Dorothy Quincy, wife of John Hancock.

No. Abigail Adams is not related to Sam Adams. Althought her husband, John Adams, is related to Sam Adams. They are both second cousins.

yes they are

Yes he was his 2nd cousin.