1901 DED	1901 Townland	1911 Townland	1911 DED	Barony	Parish	Union
Derrew	Ardultagh	Ardultagh	Derrew	Longford	Kilquain	Portumna
Derrew	Claremadden	Claremadden	Derrew	Longford	Kilquain	Portumna
Derrew	Cloonamashry	Cloonnamaskery	Derrew
Derrew	Cloonoolish	Cloonoolish	Derrew	Longford	Killimorbologue	Portumna
Derrew	Derrew	Derrew	Derrew
Derrew	Kiladullisk	Killadullisk	Derrew	Longford	Kilquain	Portumna
Derrew	Kilcrow	Kilcrow	Derrew	Longford	Killimorbologue	Portumna
Derrew	Killiane	Killiane	Derrew	Longford	Killimorbologue	Portumna
Derrew	Loughil	Laughil	Derrew
Derrew	Raheen	Raheen	Derrew
Derrew	Timsallagh or Spring Grove	Spring Grove or Timsallagh	Derrew