I don't have Jonathan Martin Derby's sisters or brothers, but I do have a lot of his descendants. I don't have also the obituaries of Chauncy Wm. Derby or his wife. I would like to have a picture of Lorenzo Marsh Derby and his bro. Henry Clayton Derby. I believe marsh Derby is buried in a cemetery near Sigourney, Iowa. I do know that Henry Clayton Derby is buried in Richland, Iowa.If you could send me the pictures by mail would be great! I will send to you what I have on Jonathan M. Derby and his wife. My address:Everette W. Evans 809-9th Avenue, Coralville, Iowa 52241-1918 Send me your address and I will mail you this information. Charles Edwin Derby and Christina Saner are my grandparents.