Some dates of birth and death (even if only approximate) would have greatly helped as would the name of Stanley's wife. However, I'm ASSUMING you mean the Walter Malippa who was born Dec 21, 1924 and died March 9, 2006, last lived in Eastlake, OH. The Ohio death index in Ancestry lists a Stanley Malippa, born 1899 and died Nov 18, 1960 in Cleveland, OH.
The 1930 census of Barnesboro, Cambria County, PA shows this family:
Staley Malippa 31, born in PA, parents in Poland. Mary Ellen 25 Catherine 6 Walter 5 4/12 Edward 3 6/12 Dorothy 9/12
The 1920 census of Susquehanna Twp., Cambria County has this family:
Mike Malippa 50, born Galicia, immigrated in 1901 Nellie 52, born Galicia, immigrated in 1902 Stanley 21, born in Galicia John 15, born in PA Annie 13, ditto Blanch 8, ditto
The 1910 census of the same location:
Michael Nalippe 43, married 16 years Anna 40 Sophia 14 Stella 12 John 6 Annie 3 Mary 1/2
The 1930 census of the same location shows Michael Malippa and wife Mildred.
When the Pretoria landed in New York on June 11, 1903 it included these passengers:
Amela Nalepa 30 Zofia 8 Stanislaw 5
They were from Galicia, Austria and the passage was paid for by husband Michael of Barnesboro, PA.
I suggest getting Stanley's death certificate. It will help to confirm his parents' names including his mother's maiden name. If you're lucky it might list exactly where he was born. He probably got his marriage license at the Cambria County Register of Wills Office. It might have data on his parents and possibly exactly where he was born. His obituary may be helpful too.
For Michael and Anna (Nellie, Amelia) I suggest checking with the Johnstown Area Genealogical and Historical Society, Cambria County Historical Society, Cambria County Library, and Johnstown Family History Center to see if they can help you find obits and burial places (assuming they died in Cambria County). Once you have their death dates I suggest getting the death certificates. The PA Dept of Health should have them.
Some of these records you can look at for free at labs.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.