https://www.logainm.ie/en/43002?s=Ratallen
Rath Tallan ringfort http://webgis.archaeology.ie/HistoricEnvironment/?SMRS=RO010-057----
Electoral district and village in north Roscommon.
https://www.townlands.ie/roscommon/boyle/killukin/croghan/croghan/
Townland in Co. Roscommon
https://www.townlands.ie/roscommon/boyle/estersnow/croghan/cavetown/