You could have a problem locating CofI parish records for the marriage of Edward and Ellen if it took place in the Templehouse Demesne area...as far as I can tell it's located in the Civil/CofI parish of Kilvarnet. This parish is based in the townland of the same name - but I cant see any mention of records for it in the RCB lists, Ryans etc...
RC records for Templehouse are recorded in the parish of Ballysodare, so I checked if any marriage records are available in that CofI parish... but they only go back to 1845 (possibly civil mariages)
The IFHF website sources for Sligo does not include CofI records for either Ballisodare or Kilvarnet
see some details on the parish from Topographical Directory of Ireland by Samuel Lewis dated 1837 on the Library Ireland website :
http://www.libraryireland.com/topog/k8.php (scroll down near the end of the page)
Kilvarnet, a parish, in the barony of Liney,
county of Sligo, and province of Connaught, 5 miles
(N by W.) from Ballymote,..... purposes. The
principal seats are Temple House,
that of Col. A. Perceval, a handsome modern mansion,
on the border of a fine lake and in an extensive and
well-planted demesne....
Shane