Hi Donna:

Birthdates and Marriages I have to add to your list are as follows: (again the source is "Bristol and Bremen Families")

Sally's birthdate: June 13, 1798

Marriages:
Keep in mind the parents of the people married on these dates were not listed in the marriage records I have. So, I'm not completely confident this Hannah and Harriet are actually Robert's children. However, it is very likely

Hannah McFarland married to John Fitch 2/23/1823. Married by John F. Gardner

Harriet McFarland m. to Frederic Bradford month? 28, 1838. Frederic was from Friendship, Maine. Married by Rev. Daniel Kendrick.

Also the spelling I have for John's wife is Robbins. Married on Jan. 30, 1842 by Rev. Josiah Higgins

I'm still trying to gain access to Prof. John Johnston's actual book "History of the towns of Briston and Bremen in the State of Maine" to gain more information. I'm hoping it is one of the books held in the Mayflower Society Library. I'll let you know if it contains info about your Robert & Lydia.