In these times of isolation ...
Likewise here.
So, I Googled "Willis family, Wexford, Ireland" and found some old posts, apparently yours based on the user names. At one time you were looking for an article by Professor Bruce Elliott entitled "Emigration from South Leinster to Eastern Upper Canada" in Kevin Whelan, ed. Wexford: History and Society (Dublin: Geography Publications, 1987)
If you haven't found the book yet, have you tried using worldcat.org to locate a copy?
This is the link if you type in "Lanark, Ontario" at the main search page.
https://www.worldcat.org/title/wexford-history-and-society/oclc/17360529I typed in my home USA zip code, and found a number of colleges in New England that have the book. Also the New England Historic and Genealogical Society in Boston has a copy. They will do a lookup for $, if and when this virus ever goes away. (They are currently closed.)
And do you have this resource? I haven't needed C of I registers yet, so I'm not too familar with it, but it looks thorough. I understand though that, unfortunately, most of their registers perished in the 1922 Records House fire in Dublin.
List of Church of Ireland Parish Registers
A Colour-coded Resource Accounting For What Survives; Where It Is;
& With Additional Information of Copies, Transcripts and Online Indexes
January 2020
https://www.ireland.anglican.org/cmsfiles/pdf/AboutUs/library/registers/ParishRegisters/PARISHREGISTERS.pdf
