1901 census lists her birth year as 1845.5 1891 census lists her as 47 which would put year of birth as 18446 which is what her cemetery record lists as well.3 Harbourville census data from 1871 lists her as 23 y.o. which would make her birth year 1848 (which seems unlikely).53
Moved from NS to NB with her brothers.
Her middle name of “Grear” is confirmed on her marriage registration in New Brunswick.
There was a 170 ton two-masted brigantine ship named after her the “Mary Givan” built in 1867 in Parrsborough (probably by George Morris) and owned by her brother James Givan (later co-owned with William Rising of St. John who was their sister-in-law’s father). The ship was lost at sea near New Bedford, MA in 1872.45
She was living in Montreal in her last years with her daughter Hallie May.

obituary from microfilm of the Moncton Transcript Oct 23, 1939
“Mrs. Charles Jones
Friends both in this city and elsewhere will learn with regret of the sudden death of Mrs. Charles Jones at the home of her daughter, Mrs. P. B. Robb in Montreal. She was in her 96th year.
Word of Mrs. Jones sudden passing was received here yesterday by her daughter, Mrs. W. N. Rippey.
Mrs. Jones was a former resident of Moncton, where she was well known as one of the city’s older residents, having resided here for more than 69 years. She had been a frequent visitor to the city after she removed to Montreal. Mrs. Jones was known as a woman of fine character and Christian qualities of heart and mind.
Her husband died some years ago. Mrs. Jones is survived by four daughters. Mrs. A. H. Ross and Mrs. P.B. Robb of Montreal, Mrs. Edward Grant, of Vancouver B.C.; and Mrs. W. N. Rippey of this city and one son, W.G. Jones in the United States”

from Daily Telegraph (St. John), July 4, 1872:
“m. 3rd inst., by Rev. Wm Allen, Charles Jones / Miss Mary Givan both of Moncton (West. Co.)”43