A family mystery needs solving ... John and Sarah Philbrick of Orwell, Oswego County, NY were listed on the 1855 census but both died before 1860 and their children were listed with the John and Lydia Wheeler household. The children were Samantha (b. abt 1851)(who married Zetto Clark, then N.S. Montague) and William. I believe Lydia Wheeler was a sister to John Philbrick, both born in N.H., children of Abraham and Hittey (Lovering) Philbrick. Does anyone know what could have happened? Possible disease or accident or fire, but how can I find facts? Where I can look? I have tried numerous sources but can not find any documentation. Thanks for your help.