Namesakes
Nobel Prize Winners:
1 peace
(peace) Mairead Maguire 1976 
Notable Activists and Revolutionaries:
1 activist
(activist) Mairead Maguire 1944-
Notable Musicians:
1 musician
Mairéad Ní Mhaonaigh 1959-
Scottish Kings and Queens:
1 queen
Queen Margaret the Maid of Norway (a.k.a. Mairead) 1286-1290