Though marked as ‘site of’ on the 1842 Ordnance Survey six-inch map, no physical traces of the structure remain visible today. The castle has completely vanished from the landscape, leaving only its cartographic memory behind.

What makes this site particularly intriguing is the complete absence of historical records about the castle itself. According to research conducted by Healy in 1988, nothing is known about when it was built, who occupied it, or why it was abandoned. This lack of documentation is unusual for Irish castles, which typically appear in various administrative records, land grants, or family histories. The mystery deepens when considering that someone in the early 19th century knew enough about the site to mark it definitively on the Ordnance Survey map, yet this knowledge seems to have been lost in the intervening years.

The disappearance of both the physical structure and its history raises fascinating questions about Ireland’s medieval landscape. Was this a minor tower house that simply didn’t warrant mention in official documents, or perhaps an earlier fortification that predated systematic record keeping? The complete erasure of the castle from Knocknamallavoge serves as a reminder that countless stories from Ireland’s past have slipped through the historical record, leaving only the faintest hints of their existence on old maps.