We may be related: Christian Stroje married Mary Ulhorn in Oldenburg.
Christian and Mary had a daughter named Margaret. I believe that they also had a son who is Frank, the cigar maker you mentioned.
Margaret Stroje married Thompson Ross in Pittsburgh, Allegheny Count, Pennsylvania in 1875.
Margaret and Thompson are my Great Grandparents.
In the 1880 census, Margaret (Stroje) Ross, Mary (Ulhorn) Stroje and Frank Stroje all listed Oldenburg as their birthplace.Margaret was living in Union, Hardin County, Iowa and Mary and Frank were living in Allegheny, Allegheny County, Pennsylvania in 1880.