I am (mainly) trying to bridge the Atlantic with my Droz ancestors who lived in Jefferson Co, Iowa 1860, said to have come to the US in 1856. Does anyone have information on Peter RIVEY or any of the DROZ family below?

Joseph DROZ, b about 1803 in France
Mary (wife) b about 1805 in France
George b about 1834
Amelia, b 29 May 1840, in Belfort France, m Peter Rivey b 27 Oct 1834 in France
Elizabeth b about 1844, m James A Liblin
Mary Justine Philomen b about 1850, m Antony Keller
Christian b about 1838, m Vincent Palm

It appears that a number of releated DROZ families from France settled in the same area in Iowa. Has anyone put all of this together someplace?