I am sorry to say that I haven't researched your Mary or Ann Abbott at all. My line went from:
Mary Ann Abbott 1877-1911 who married Thomas William Kirby Holloway 1875-1905.
Mary Ann Abbott's parents were Jonathan Abbott 1842-1908 who married in 1866 Amelia Russell 1843-1890.
Jonathan's parents were then Benjamin Abbott 1807-? who married in 1841 Mary Ann Tremblett 1816-?.
Benjamin's parents were Stephen Abbott 1781-? who married in 1802 Martha Ivany 1786-? and Stephen had a Will dated 1850.
Stephen's parents were Stephen Abbott 1750-1801 who married in 1788 Sarah ??? 1755-1801
Stephen's parents were Stephen Abbott 1714-1802 who married Ann ??? 1723-1818
Stephen's parents were Hugh Abbott 1685-? and unknown.
That is my line of Abbotts, and the only one's that I did any research on because, as you know, the Abbott's are very confusing with multiple names in the same generations. For instance, there were two Jonathan Abbotts approximately the same age, one born to a Benjamin Abbott and the other to a Samuel Abbott. Thank goodness my grandmother told me it was Benjamin Abbott before she died, or I would have had a real headache trying to figure that one out, which I still did, because I wanted to prove her right...lol. If anyone has any further questions on this line, email me at firstname.lastname@example.org
because together maybe we can get this line figured out because I still have some questions and I may have made some mistakes that I am unaware of at this point because as you know, the Abbott's are a real headache to figure out...lol.