Hi Martha,
do you know our page www.auswanderer-oldenburg.de? There you can find some Steinkamps. But we don't know where they lived after living Oldenburg. Maybe someone of these people was your ancestor und you could give us informations about hin amd his family? Or do you have another Steinkamp emigrant from Oldenburg we don't have on our page?
Some of my relatives came from the Steinkamp family and went to Cincinnati. Maybe we are relatives?
Best regards,
Gunter