I don't know that I can help much. I am dead ended on Hannah's line except for guesses and speculation. I am estimating her birth as about 1870 and her death as about 1852. I have her marriage date as 2 Oct. 1800 in Georgetown. That is from North Yarmouth Marriage records. I have then speculated as follows.
Hannah Doughty may descend fromJohn Doughty and Elizabeth Ross. My only basis for this assumption is that John and Elizabeth did have a daughter named Hannah, she would have been about the correct age,and the family did live in the Long Island area. (Wallace is also a common name on Long Island as well as Phippsberg.)
A deed for Hannah (Doughty) Wallace/Wallis is at the Cumberland County registry book 247/66
I have listed Josiah as the son of Josiah Wallace and Abigail White. (This is the concensus of a genealogy group in Phippsburg that has been working to unravel the Wallace/Wallis Family tree) Again I have ......guessed.....(based on the marriage date) that josiah was also born about 1780 and based on the fact that the deed below refers to land sold to Hannah in May 1826, I believe he died some time died about in late 1825 or early 1826. (my supposition is that if he were still alive the deed would be to him. I know...it is pretty bad genealogy practice to do all this guessing but it's all I have.)(Also I don't list any children of Josiah and Hannah after the early 1820's) Since the deed is to the "heirs of Hannah" she must have reciently died so I judge her year of death as about 1852.
I provide a partial transcription of the deed below.
BIOGRAPHY Josiah Wallace is listed as from Georgetown in the Georgetown marriage vital records. Hannah is listed as from North Yarmouth.
A deed registered at Cumberland County, Maine, book 247/66, lists heirs of Hannah Wallace: David Wallace, James Wallace, Enoch Wallace, Ellinor Doughty,Sally Griffin, Margaret York, Cynthia Doughty of Portland. James Hill and Abigail Hill of Cumberland. Heirs at law of Hannah Wallace late of Portland desceased in consideration of $10.00 paid by John Wallace of Portland .... a certin lot of land on Long Island.[description]containing 10 acres more or less being the same which William Griffin conveyed to said Hannah Wallace by deed dated 11 May 1826.book 108/316 dated 7 July 1852. signed David X Wallace James X Wallace Enoch Wallace Ellinor X Doughty Sally X Griffin Margaret York Cynthia X Doughty James X Hill Abigail Hill
I suppose that it is also possible that the Wallace homestead was divided up between the Wallace children at the time of Hannah's death and deed 247/66 is possibly where a son (John Wallace) is buying the land from the other heirs so as to have the whole piece of property for himself. (note that all the heirs except Abigail and Margaret make their "mark" X. So....I guess maybe they can not write?)
So again I will say that I do not have much concrete information for you but maybe you can take some of my guesses and either prove them or disprove them. I'll be interested if you can do either one as I don't seem to be able to get any further. Good luck
PS: My connection here is that the Margaret York in the deed married a ggggg gradnfather of mine Robert York and Ellinor married a Doughty which is my Mothers line