Something I noted may be a clue or misleading. I was unable to follow up on it, but something may come up.
A possibility is that Annie Arleda? Kingston and Arthur Henry Estey/Essensa were related to Mary Ann McCashion ((b. 16MAY1841), d/o Neil and Mary Ann (McCarron) McCashion. At:http://www.mocavo.ca/family-tree/William-D-Romanski/Genealog...
is a strange note:
"In the affidavit of David Essensa filed with Mary Ann McCarron's pension petition, he claims her last three children were born in his house, which would probably have been in Kingsclear."
There appear to have been two of that name:
Affidavit of John Feeney "She is an Irish woman and I have always understood she and her husband came to this country from the County of Derry in Ireland after they had four children."
Affidavit of Daniel Essensa "about nine years ago"
Affidavit of Mary A McCashion "about nine years ago" also gives date
Affidavit of John Feeney "about nine years ago"
All given 20 August 1864