Charles O'Hara Born 1880

My GGrandfather was Charles O'Hara from chicago. BD around 1880. Married Elsie Imogine Hyatt in Lincoln Nebraska 1905 (approx) 2 children - Neola born 1906 and my father born 1908 both in Lincoln. Charlie died 1909 from TB. I understnad they came to Chicago from Canada. He did have a sister and several brothers. We are still checking but think they came from Co Sligo?Do you know anything about them