The Historic excavations.ie website mentions a dig and survey carried at the same location in that south east corner of Carrowcardin townland - see : Licence number: 19E0051
extracts :
"....development of a site at Carrowcardin, Inishcrone, Co Sligo to construct an extension to the rear, north, of the disused listed school house (NIAH ref no: 32401603), refurbish the adjacent cottage, construct an area of hard standing between the schoolhouse a.."
"...The closest site of archaeological interest is SL016-071, the site of a cross. However the cross itself has been moved to Castleconnor RC church. It is 18th century in date, ..."
"...There is a local tradition of the old schoolmaster ‘digging up bones’ when planting potatoes in the early 20th century, and it is also thought that the site may be that of a cillÃn. Indeed on the 1st ed OS map the site is marked as R.C Chapel with the symbol of a cross marked...."
"....results of the testing would suggest that the construction of the schoolhouse in the 1920s effectively removed all traces of the earlier church as recorded on the OS 1st edition map..."