William Butler, 4th Baron Dunboyne Peerage person ID=272447 (1355–1406) Parents Piers Butler, 2nd Baron Dunboyne Catherine de Burgh Children Piers Butler, 5th Baron Dunboyne John Butler James Butler, 7th Baron Dunboyne Edmond Butler, 6th Baron Dunboyne Siblings Nicholas Butler Thomas 'MacPiarais' Butler, 3rd Baron Dunboyne Richard Butler Partners Elizabeth Plunket