you're welcome. I enjoy working on challenges. Part of my wife's family was in NS for a while - 1770 to 1870's - and the shortage of records makes it very difficult.
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you might have some of this:
1. worldcat.org will tell you what libraries have a book.
searched worldcat for
A Copy of the Annals of Liverpool and Queen's County, [Nova Scotia], 1760-1867, By Robert James Long · 1926
results:
print: Harvard University, Cambridge, MA and Acadia University, Wolfville, NS
microfilm: Family History Library, Salt Lake City
https://www.worldcat.org/search?qt=worldcat_org_all&q=Annals+of+Liverpool+and+Queen%27s+CountyThe LDS used to loan out microfilm to their local Family History centers and to affiliated libraries (public or private, not LDS). I don't know if they still do. You might get a copy of the film that way.
2. Google Books snippets says that in Simeon Perkins' Diary - John Carroll is mentioned on page 255 of the same volume that mentions the marriage. I lost track of the volume number, I guess it is the one that covers the years 1766 to 1780.
3. This might save you some time: I traced Mabel E Smith's line back through her mother's, mother, etc. So far, I verified everything except the oldest wife, Mary Ann Yates. The only source for her name is on wikitree, referencing a Macrae family history. I didn't do the males in this line.
Alexander Macrae (?1774 - ?1875)
+ Mary Ann Yates? [wikitree]
1814: married [wikitreee]
- Mary Ann McCrea (24 Dec 1828/9, Sanford NS - 29 Oct 1905) bur Darlings Lake Cem, Yarmouth Co
30 Oct 1845: marriage [wikitree]
1895: widow in Yarmouth Directory
+ Samuel Trefry (1819, NS - bef 1895)
1871: Scot, Baptist, in Ohio, Yarmouth, NS
- Sylphia Trefry (1855 - )
+ Augustus Sullivan (1855, NS - )
- Mabel (Mary?) Estella Sullivan (7 Oct 1873, Sanford, Yarmouth NS - 27 Jan 1934, prob RI)
buried Pawtuxet Mem Park, Cranston RI
+ Arthur Dennison Smith (1872-1961)
Some of the sources:
Alexander MacRae page at wikitree
https://www.wikitree.com/wiki/MacRae-2#_note-0-------------
1871 Census Samuel Trefry household.
https://www.ancestry.com/discoveryui-content/view/2116560:1578an ancestry hint for Mary Trefry shows her daughter Agnes' death in Massachusetts which names her father.
1891 Augustus Sullivan hsld
https://www.ancestry.com/discoveryui-content/view/13599:1274Arrived at Boston [to marry her husband who was working there at the time, I guess]
arrived at Boston from Yarmouth, January 10, 1895
Miss Stella Sullivan, 22, lady
https://www.ancestry.com/discoveryui-content/view/114217:8745Massachusetts Marriages
January 10, 1895
https://search.ancestry.com/cgi-bin/sse.dll?dbid=2511&h=13743817&indiv=try&o_vc=Record:OtherRecord&rhSource=60525gives her parents as Augustus and Sylphia
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Port of Yarmouth, applying for admission to US, December 1911
Mrs Estella May Smith 5'4", fair complexion, light brown hair, blue eyes, born in Yarmouth
Jessie Leah 12, Henry Judson 10, Joseph Archibald 7, Robert 6, Zelpha May 4, Elizabeth 3, Victor 1
contact: Aunt Mrs John Thurston, Yarmouth NS,
destination: Danvers, MA
trip paid for by husband, their destination: Arthur D Smith Bell St, Danvers.
had been in US before in So Boston in 1909
most of the kids have blue eyes, fair complexion, light hair
https://www.ancestry.com/discoveryui-content/view/270369:1075They ended up in Rhode Island and she is buried in Cranston. I didn't keep that stuff since I was working backward, but it is easy to find if you are on ancestry. Except the RI death records - they are not on line for that era.