The Ryan Family

I am researching the RYAN family from Long Island, New York. James Bernard Ryan married Mary Boughton in the 1880's (?) and owned and operated a small grocery store in Long Island. They had several children including Thomas Ryan, Fanny Ryan (married Peter Henry), Marion Ryan (married Christian Leroy Wackerly), Dorothy Ryan (married Guy L'Hommedieu) and Arthur James Ryan (married Helen Marie Kugler from Syracuse N.Y.) who is my grandfather on my father's side .
In addition, I'm researching the family of Mary Keating b. March 25, 1865 in Irishtown, Ireland (my great-grandmother on my mother's side). She was the dauthter of Michael Keating and Ellen Cashin of Ireland.

Any information would be appreciated. I am also willing to share the information that I have.