Sligo is nestled between Mayo and Leitrim in the Northwest. Its population of over 180,000 in the 1840s reduced dramatically after the Great Famine through death and emigration to North America and elsewhere. It has grown over recent decades and is now 65,000. Sligo families are a mixture of native Gaelic families including: scanlon, (O')Healy, Brennan, Gallagher, (O')Hart, McDermot and Gilmartin. The main 'gentry' families are Cooper, Crofton, Gore, Nicholson. Ormsby, Parke and Phibbs. This book set out the records available for Sligo, where they can be accessed, and how they can be used to best effect in tracing Sligo families.