VictorIE
"Kilduff Belturbet Lane" seems like an unlikely name. It **might** be known locally "Kilduff Lane, Belturbet", but that might not be official.

The townland https://en.wikipedia.org/wiki/Townland is Kilduff https://www.openstreetmap.org/relation/5749761 and the nearest village is Belturbet.

People would give their address as "Family / House Name, Kilduff, Belturbet, County Cavan". You can verify this here: https://finder.eircode.ie/#/map