Hello John,
My research shows three brothers :-
John,evicted from a farm in Ardkill,moved to Ballinrobe and his Son Patrick married Ellen Jennings and they lived with their children at66 Glebe street where my Grandmother was born in 1895.
William born 1815 Farmer and Labourer - Ardkill - two children(at least !) Margaret born 1853 and Ellen born 1859
Michael born 1821 Farmer - Ardkill - three children (at least!) Margaret born ?, Mary born1850 and Ellen born 1850 (twins?)
The 1901 census shows occupants of 24 Glebe St. as:-Mary age 40,Patrick her Son age 30 (Baker),
John aged 16 (Baker),Peter 14 (Labourer),Bridget aged 12,Margaret aged 10 and Celia age 7.
Could 14 year old Peter be your Great Grandfather?
I was aware of John moving to Ballinrobe but told that his Brothers remained in Ardkill farming and there are still Sheridans' there today.
If you get a copy of the 1901 census it might help your search.
By the way , where are you?...I live in Essex UK
Regards
John berry