There is a mistake in the townland name on 
https://www.townlands.ie/tyrone/strabane-upper/cappagh-upper-strabane-portion/facgary/
Facgary should be Faccary. This is the spelling given in the 1911 Census. There are many variants of the name but I think the 'g' in Facgary is a typo.
My positioning on the map is fairly rough.