Lord Avondale was also father of Henry Stewart, 1st Lord Methven and Sir James Stewart, father of James Stuart, 1st Lord Doune, whose son James became Earl of Moray.
Lord Avondale war ebenso Vater von Henry Stewart, 1. Lord Methven und Sir James Stewart, dem Vater von James Stuart, 1. Lord Doune, dessen Sohn James durch Ehe Earl of Moray wurde.