Minnie Dornan, daughter of John and Julia Leroy of Clearfield, PA

Hi, I am searching for info. on Minnie Leroy Dornan (1873 France-1952 Niagara Falls, NY), daughter of John and Julia Leroy, who came from Lille, France to Clearfield, PA in about 1880. I am trying to find out Julia's maiden name. All the marriage certificates for the children of John and Julia Leroy that I could find in PA were before 1900 and do not have Julia's maiden name, just says John and Julia Leroy. I don't know if any of their children married after 1900 or where. Julia died in PA in Dec. 1899 and in 1902 John remarried. Hope this info. is enough to find out Julia's maiden name. Any help greatly appreciated. Thanks.
-Mark