Hi Kathryn
Here is a marriage record from www.rootsireland.ie/ ( a subscription site):
Date of Marriage: 24-Aug-1856 Parish / District: GEEVAGH County: Co. Sligo Husband Wife Name: Michael Gilligan Catherine Davy Address: Denomination: Roman Catholic Roman Catholic
Neither father's name is given or either family's address. The bride was probably from Geevagh.
The Tithe Applotments (free at http://titheapplotmentbooks.nationalarchives.ie/) have 4 Gilligans in Sligo in 1824 (no Edwards though). This will give you their specific addresses.
There is a record of the baptism of Edward G in 1799 in Dublin
Edward Gilligan Date of Birth: Date of Baptism: 16-Sep-1799 Address: Ne Parish/District: ST.PAUL'S ARRAN QUAY Gender: Male County Co. Dublin Denomination: Roman Catholic Father: Cornelius Gilligan Mother: Catherine
There are 3 others 1791, 1793 & 1802 all in Roscommon.
The only ones for Margaret Scally are 1799 Westmeath & 1805 Kildare.
I couldn't find their marriage record.
Col