Giles FOSTER and Susan BLOCKSOM were my great great grandparents. Their son, Samuel Blocksom FOSTER b. 1867 was my great grandfather. I can give you information on him and his descendants if it'll help.
I'm also going to Marion to meet with one of my mother's cousins at the end of July. She is supposed to have information on the Fosters, though I don't know how far back it will go. If you're interested in any of the information I have, let me know.