You should be able to glean some information about the Schelsky's from the obituary below. Walter, Sr's social security information shows he died in 1976. I am not related nor do I know your family.
Born: 3 Dec 1926
Died: Feb 1976
State (Year) SSN issued: New York (Before 1951)
Patricia (Schelsky) Stewart
POLO — Patricia (Schelsky) Stewart, of Polo and formerly of Batavia, died Thursday, July 15, 2004.
She was born July 18, 1928, in Holland, Mich.
She is survived by her children, Kathryn Toth and Elaine (Ron) Lee of Polo, Patricia (Greg) Smith of Batavia, Walter (Sandy) Schelsky of Salem, Va., Leigh (Deena) Schelsky of Belvidere, Wes (Sherry) Stewart of Yorkville and Bill and Chris Stewart of Batavia; 16 grandchildren; 15 great-grandchildren; a sister, Kathleen (Eddie) Turner; and a niece, Eileen.
She was preceded in death by her parents; her first husband, Walter Schelsky; her second husband, Billie Stewart; her daughter, Sharon Bachman; her granddaughter, Kimberly Bowman; and her grandson, Daniel Moser.
Burial was July 20 at River Hills Memorial Park in Batavia.