hi James,
I've just found your old message and have replied on the off chance that your enquirie is still open.
My GG Grandmother Brita Katarina Strömmer (1824 - 1872) was sister to Johan Strommer (1814 - 1854) who was father of Johan Alfred Strommer (1842-1920) of Gelfe(Gavle) Sweden.
I've been researching their forefathers in Sweden, and their decendants to USA and Australia.
Kind regards Cliff Lindgren.