John O'Leary (Fenian)

John O'Leary
O'Leary, 1900
President of the Irish Republican Brotherhood
In office
1891  16 March 1907
Preceded byJohn O'Connor Power
Succeeded byNeal O'Boyle
Personal details
Born(1830-05-23)May 23, 1830
Tipperary, County Tipperary, Ireland
DiedMarch 16, 1907(1907-03-16) (aged 76)
OccupationIrish Republican

John O'Leary (23 July 1830 16 March 1907) was an Irish separatist and a leading Fenian. He studied both law and medicine but did not take a degree and for his involvement in the Irish Republican Brotherhood, he was imprisoned for five years in England during the nineteenth century.