tomm on Family Tree Circles

My ggrandad, m. Mary Larson, b. abt 1867 in Norway, imm. to US in 1886, m. William in Winona 1887. They had 4 c, Ada, William, Robert P.(my grandad), and Joseph. Mary (my ggrandma)d. in Kenosha, WI 1931. I think William d. btwn 1920/30 also in Kenosha. Still looking for his parents, who might have come fr. PA.