Cáisleán tSíomoin

Cáisleán tSíomoin, 'Simon's castle,' takes its name from a medieval landholder or settler named Simon, as documented in 1839 Ordnance Survey records and earlier medieval sources citing the place as 'villa Simonis' from 1280. The townland's recorded history spans nearly eight centuries of continuous settlement and administrative recognition. Castletimon holds significant importance in the medie...