Bartholomew Booth was thought to be the son of this Henry's illegitimate brother.

His only daughter inherited his lands and handed them over to her illegitimate brother, Neill.

Oh, wait, I know: he's your long lost illegitimate brother.

The Earl also had an illegitimate elder brother, Theobald Butler.

And sadly, David was really just her half-brother-and a secret, illegitimate brother at that, if one wished to be strictly technical.

My children may be assured that no illegitimate brother or sister exists or ever existed.

Even in an extremity of temper, he avoided using his favorite epithet to describe his illegitimate brother.

The scruffy, surly, illegitimate brother of her husband.

In 1990, Lacson discovered that he had an illegitimate brother whom his father was refusing to recognize as a son.

Xerxes apparently succeeded to the throne but two of his illegitimate brothers claimed the throne for themselves.