18 years of age.
A man may not marry his mother.
A man may not marry the sister of his father.
A man may not marry the sister of his mother.
A man may not marry his sister.
A man may not marry his daughter.
A man may not marry the daughter of his son or daughter.
A man may not marry his first cousin.
A woman may not marry her father.
A woman may not marry the brother of her father.
A woman may not marry the brother of her mother.
A woman may not marry her brother.
A woman may not marry her son.
A woman may not marry the son of her son or daughter.
A woman may not marry her first cousin.
23 Pa.C.S. § 1304