I believe I may have some info for you. I actually ran across it in the search for my Stephen P Pool (different from yours) and found Ellen attached to my ancestor Stephen in error. In researching this bit of info, I came across the census info you referenced in your query. The Ellen listed in the manuscript I have shows an Ellen "Steele" married to Stephen Pool and their children were Malinda, Doug, John Henry, Arthur and Canary. It also lists their spouses and children. The author of the manuscript references an individual with an email address as his source and I tried to contact them to see what their sources were and was not able to get a message through. You are welcome to the info and I would be happy to email it to you.