I find two families living together in the 1880 census for New Castle DE.Benjamin Collins,wife Mary, daughter Ida along with brother Howard. In the same household are Samuel Dyer, wife Rebecca and son William E.I believe Benjamin Collins, Howard Collins and Rebecca Dyer are brothers and sister, after checking previous census years. Samuel Dyer and Mary E. Dyer are also listed with their parents, William and Hannah (Giberson)Dyer in New Castle, same census, but both are listed as married. Trying to find out if Mary, w/o Benjamin Collins is sister of Samuel Dyer. Thanks for any help.