William mac an Iarla Burke Irish noble (d. 1580) Parents Richard Burke, 2nd Earl of Clanricarde Children Siblings John na Seamar Burke, 1st Baron Leitrim unknown daughter Bourke Richard 'Og' Bourke Mary de Burgh unknown son Bourke Lady Mary Burke Margaret de Burgh Ulick Burke, 3rd Earl of Clanricarde unknown son Bourke