I make Mary Ann Tapley to be the d/o:
NATHANIEL TAPLEY (s/o Alexander and Sarah (Hood) Tapley) b. ca. 1772, d. Saltfleet Twp., Wentworth Co., Upper Canada ca. 1846, m. Maugerville Anglican Church 21MAR1790 MARGARET GODSALL (d. 1836-46); m. 2nd CHARLOTTE _____.
Nathaniel would be a brother of Asael/Asa Tapley.
According to a change in his father’s will, Nathaniel Tapley, by 1823, had left the province of New Brunswick; presumably for Upper Canada. If the Samuel  below, d. 1810, is his grandson, he may have joined his son in Brant Co.; probably ca. 1822. This suggests that a daughter of Nathaniel and Margaret (Godsall) Tapley might also be:
ELIZABETH TAPLEY b. Oromocto, NB 26SEP1792, d. Burford Twp., ONT 22OCT1865, m. JACOB GILBERT FORMAN. Elizabeth’s parents are said to have moved to Tapleytown (now part of Stoney Creek), ONT in the 1830’s.
Tapleytown was named for Col. John Tapley, from New Brunswick, who had a son, Samuel.
That Nathaniel Tapley went to Upper Canada is indicated by an abstract of his will as passed on by Carroll Kimball (Tapley GenForum # 671, 29JAN2007) as:
WILL OF NATHANIEL TAPLEY Made 11 Nov 1836:
Nathaniel Tapley of Saltfleet, County of Wentworth, farmer,
Mentions wife Margaret, son Samuel, granddaughters Mary Eliza Gee and Loranna Gee (neither yet of age or married) four daughters Sarah, Elizabeth, Margaret and Mary Ann
grandsons: Obed, Thomas Odbur and Johnson Jasper Tapley, my three grand sons (by my son Nathaniel deceased)
Real Estate mentioned:
south half of lot 17, sixth concession of Saltfleet.
south half of lot 18, sixth concession of Saltfleet
south east half of lot 18,sixth concession of Saltfleet
appointed son Samuel Tapley and son-in-law Jacob Forman as his executors
Witnesses: Frederick John Witfield, Sam B Joslin
Phillip Jones Jun'r
Codicil to will “I give and bequeath to the inhabitants of Tapleytown and adjoining neighbourhoods for a burying ground forever seventy two rods of land situated on lot number seventeen in the sixth concession of Saltfleet”
May 3 1841
Witnesses: Jacob Forman, John Ballard
John Springsted, Joshua Knight
“bequeath to my beloved wife Charlotte the use of one third of my real estate and personal, and also the use of the room in the west end of my house as long as she remains my widow.” This to be part of my last will and testament. Signed and sealed in presence of:
John U Schnider
David Proser Nathaniel Tapley
13 Jan 1846 - not sure if this date is date of last codicil or is date will was probated
Sometime between 1836 and 1846 his wife, Margaret, died as she is mentioned in 1836, but in 1846 his wife is Charlotte.
What is tricky about Tapley's in NB is that there are two, related, families. One is pre-Loyalist and moved out of Sunbury Co. roughly 1810-1820. Just as
they left, the Loyalist family moved in making it seem they were there continuously.