I'm not related. The more you post the easier it is to help you.
The 1900 census of Lycoming County, PA lists an Alice E. Clegg, born in Oct 1896, as the daughter of Robert, born Oct 1875 in England, and Hattie, born in May 1877. They were married 5 years. A daughter Mary J., born June 1898 is also listed.
The 1910and 1920 censuses of Sullivan County, PA lists the family again with a number of children. The 1930 census seems to have the family back in Lycoming County.
A 1920 Michigan marriage record for their daughter Dora shows Hattie's maiden name as Hoppes.
The 1880 census of Sullivan County shows a Harriett Hoppes 2 as the daughter of John Hoppes 52 and Lucinda 28.
Some of these records you can look at for free at familysearch.org and Ancestry.com. For those you cannot see for free I suggest checking with your local libraries to see if they have Ancestry or Heritage Quest.
I suggest gettinga copy of Robert and Hattie's marriage application license which they probably got at the Sullivan County Register of Wills (if not check Lycoming County Register of Wills). It may have some very helpful data. Check with both the Sullivan County Historical Society and the Lycoming County Genealogical Society to see if they can help you find the burial places and obituaries for them (assuming they died there). Once you know when and where they died I suggest getting their death certificates which would have data on their parents' names.