Living at 6 Forrest Avenue, Quincy, on the 1910 census...
Louis Pisspanen 57 Granite Quarryman b Finland 1853
Susan Pisspanen 52 b 1858. Arrived USA 1893 (12 yrs married)
John Pisspanen 23 Stepson Entered USA 1900
I think that as Lauri was born in 1852, and Louis was born in 1853 that they might be brothers.(?) Louis is a quarryman and on Lauri's Naturalization papers, he is a Stonecutter. They might well have been working in the same job. Or could it be that Lauri and Louis are the same person, and his name is wrongly spelt.
Louis's wife Susan, according to the census, entered the country in 1893.