Robert Corrigan's birthplace is considered one of six historic cities in what area?
Robert Corrigan: Robert Corrigan, (c. 1816 – 19 October 1855) was born in County Tyrone. County Tyrone: County Tyrone (from Irish: "Tír Eoghain" , meaning "land of Eoghan" ) is one of the six historic counties of Northern Ireland.
Northern Ireland