I am researching some Margeson's and came across your message.I don't know if this is the same Ada you are looking for but this is the information that I have:
Ada born April 20, 1817 in Wayne Died December 6, 1850 at age 33. Son named John. Ada's sister Margarey, Maggie, Cared for Ada's children until William (?) moved his family first to Inidiana then to Iowa.There is a great grandson, Dilbert Sander.I have his address if you would like to email me at email@example.com.Hope this helps and hopefully this is the one you are looking for.I noticed that our death dates were different.Thought maybe thats why you couldn't find her.