my husband's maternal ancestry is the Ledwedge's and McDumith/McDermitt's of "Kilder", Ireland

Peter Ledwedge, b.Apr 20 1852, Kildare, Ireland, d. Dec 21, 1937 Celina, Mercer, Ohio.
his parents;
Patrick Ledwedge b. Kildare, Ireland
Mary McDumith/McDermitt b. Kildare, Ireland.

who were Patrick's other children and parents?
who were Mary's parents, and what is the "correct" spelling of her name?

Thanks.
Cornelia