From the account of the activities of the Ballingeary Company of the I.R.A. in 1920 and '21 - written in 1933 by John P. and James D. Cronin, Bawnatoumple, Ballingeary, Co. Cork.
WO 35/147A/50 Death of Jeremiah Casey; 3rd January, 1921; Derryfinane, County Cork.
1911 census at Derryfineen, Cork
1921 Jan 3. Shot in Derryfineen. His death is in Irish GRO. The ADRIC patrol was under the command of DI3 E Fleming, and included T/C HW Owen and T/C ER Wilson
C Company Macroom