Home › Authors › Humphrey O'Sullivan 👤 Humphrey O'Sullivan b. 1780 – d. 1838 · 1 book Biography Irish language author, linen draper, politician, and one-time hedge school master. Books by Humphrey O'Sullivan [Diary. R.I.A. Cod., 23 H 26.] [Diary. R.I.A. Cod., 23 H 26.]