McKinley's of Crossmolina, Co. Mayo

I am searching for any relatives who might still be living in Crossmolina or other parts of Ireland.  My grandfather George McKinley was born in Rathnamagh, Crossmolina, Co. Mayo on Mar. 28, 1873.  His parents were John and Anne (also a McKinley).  John McKinley's father was Robert and Anne's father was John.  They were married on Mar. 6, 1860.

George McKinley's siblings were Robert (1861), Thomas (1863), Anne (1866), Maria (1869) and John (1871).  He also had three half-siblings; Henry (1879), Margaret (1878) and Thomas (1876).  Their mother was Maria Sharp.

George emigrated to the United States with Henry in 1885 and lived with Robert and family in Pennsylvania.  They were coal miners.

Maria married John Williams and had two children, Margaret and Haydn who grew up in Wales.  She died about 1895.

I have no knowledge of my grandfather's brothers Thomas and John nor his sister Anne.

Any information would be helpful.