| 3714 | UCC Special Collections & Archives | BL/EP/G/136 | 1844 | Wills, settlements and associated documents, a numbe... | Grehan Estate Collection |
| 9847 | UCC Special Collections & Archives | BL/EP/G/1360 | 1945 | Letter to Cecily Grehan from the Department of Posts... | Grehan Estate Collection |
| 9848 | UCC Special Collections & Archives | BL/EP/G/1362a-1363 | 1929-1942 | Diaries of Cecily Grehan: December 1929-December 193... | Grehan Estate Collection |
| 9849 | UCC Special Collections & Archives | BL/EP/G/1364 | 1923-1938 | Personal finances of Cecily Grehan: file relating to... | Grehan Estate Collection |
| 9850 | UCC Special Collections & Archives | BL/EP/G/1365 | 1925-1932 | Small leather file kept by Cecily Grehan containing ... | |
| 9851 | UCC Special Collections & Archives | BL/EP/G/1366-1369 | 1919-1972 | Material relating to the personal finances of Cecily... | Grehan Estate Collection |
| 9852 | UCC Special Collections & Archives | BL/EP/G/1369 | 1937 | Letter to Peter Grehan at school from his mother, Ce... | Grehan Estate Collection |