Genealogy / Saint-Paul from Wilno born 1903 [4]

hello I'm saying my relatives family name is Saint-Paul. Bogumil Saint-paul of Wilno Dp of ww2 was my great grandfather. I would like to learn more about where they lived? what school did my grandfather go to? where did they go once they became Dp's in ww2. I am Australian and cannot speak polish so I am finding my research hard to carry out. Does anyone know or heard of the family name Saint-Paul? Thank you Kelly