Born in Mayo in 1865. Although he initially trained as a doctor, MacBride abandoned that profession in favour of work with a chemist. He travelled to America in 1896 to further the aims of the IRB, thereafter travelling to South Africa where he raised the Irish Transvaal Brigade during the Second Boer War.
MacBride married the Irish nationalist Maude Gonne in 1903. He was not a member of the Irish Volunteers, but upon the beginning of the Rising he offered his services to Thomas MacDonagh, and was at Jacob’s Biscuit Factory when that post was surrendered on Sunday, 30 April 1916. He was executed on 5 May 1916.
I Maigh Eo a rugadh é in 1865. Ainneoin go raibh sé oilte ina dhochtúir d’éirigh sé as an gceird sin agus chuaigh ag obair le cógaisíocht. Thaistil sé go Meiricieá in 1896 le hobair an IRB a chur chun cinn agus ansin go dtí an Afraic Theas áit ar chuir sé le chéile Briogáid Transvaal na hÉireann le linn Dara Cogadh na mBórach.
Phós Mac Giolla Bhríde an náisiúnach Maude Gonne in 1903. Ní raibh sé sna hÓglaigh ach nuair a thosaigh an tÉirí Amach thairg sé cúnamh do Thomás Mac Donnchadha agus bhí sé i monarcha brioscaí Jacob nuair a géilleadh an áit sin an Domhnach 30 Aibreán 1916. Cuireadh chun báis é an 5 Bealtaine 1916.