I've been looking into my past as well. I found the same info about Hans Philip. It seems the family name might have been Groskosten. Apparently he was from Hessel Kassel and sailed from Mutterstadt. Are we related. I grew up in Beaver county PA. My father is Dale , son of Don Groscost. I'm an artist and have been exhibiting my work in Germany and have become quite interested in the whole relationship. Email me when you get a chance. I leave again for another exhibition the 25th of April.