SIMPSON and SWEENEY of Derry

[Muddy]

Looking for ancestors and relatives of David SIMPSON born Claudy DRY circa 1838 and his wife Eliza Jane SWEENEY (possibly born in Mubuoy DRY).

They married in 1861 and had 4 children : Rebecca Mary SIMPSON (born Greenan DRY around 1864 and married Samuel QUIGLEY of St Johnstone); Sarah Jane SIMPSON (born Greenan DRY around 1866 and married John GILFILLAN of Derry); George Sweeney SIMPSON (born Greerstown DRY around 1870 migrated to Australia) and William John SIMPSON (born Greerstown DRY around 1872 migrated to Liverpool).

David SIMPSON's parents were William SIMPSON (farmer) and Mary MITCHELL
Eliza Jane SWEENEY'S father was George SWEENEY (farmer)

Any help would be much appreciated