Amhlaoibh Ó Súilleabháin, Irish language author, linen draper, politician, and one-time hedge school master, is born on May 1, 1780. He is also known as Humphrey O’Sullivan.

Ó Súilleabháin is deeply involved in Daniel O’Connell‘s Catholic emancipation movement and in relief work among the poor of County Kilkenny. He is also an avid bird watcher and a collector of manuscripts in the Irish language. His diary, published later as Cín Lae Amhlaoibh, is kept between 1827 and 1835. It remains one of the most important sources for 19th-century Irish life and one of the few surviving works from the perspective of the Roman Catholic lower and middle classes. (A translation has been published in English and an abridged and annotated edition in Irish, both edited by Tomás de Bhaldraithe.) He also composes verse and stories.

Ó Súilleabháin is born in Killarney, County Kerry. He comes to live at Callan, County Kilkenny, when he is nine years old, joining his father, Donncha Ó Súilleabháin. Father and son establish themselves as teachers in the surrounding towns. They begin by teaching under the hedges, but eventually a cabin is built as a school. He takes over the post of teacher there when his father dies in 1808. He remains a resident of Callan until his death. At the time, County Kilkenny is one of the most strongly Irish-speaking areas in Leinster.

As a teacher, Ó Súilleabháin is well versed in mathematics and Latin, and likely teaches English to a high standard. His diary shows him to have a deep interest in the natural world, and there are daily references to the weather.

Though Ó Súilleabháin is clearly a master of English, his diary is mostly in Irish, with occasional business-related entries in English, likely so that such transactions can be verified by others. He mostly eschews the archaisms favoured by other writers in Irish, writing in a fluent, flexible, colloquial style which could encompass both concision and literary elaboration. His diary shows him to be deeply involved in the life of the poor but to also be well acquainted with local notables. He is fond of occasional revelry and a good meal.

Ó Súilleabháin has an impressive collection of Irish language manuscripts, both prose and verse, which are supplemented by books. As a businessman, he deals in linen, corn and meal, and often has to make long trips to Dublin, Clonmel and Waterford.

Ó Súilleabháin marries a woman named Máire Ní Dhulachanta, not often mentioned in his diary. They have six or seven children, four of whom survive into adulthood. Her death, however, causes him great grief, and he never remarries.

Ó Súilleabháin dies on November 20, 1838, in Callan and is buried in the family plot in St. Brigid’s graveyard.

Amhlaoibh’s original manuscript is currently in the possession of the Royal Irish Academy. An edition of the complete manuscript is published as Cinnlae Amhlaoibh Uí Shúileabháin by M. McGrath in 1936-37 and an abridged and annotated edition, Cín Lae Amhlaoibh, by Tomás de Bhaldraithe in 1970–1973. A translation, The Diary of an Irish Countryman, is published by de Bhaldraithe (Mercier Press) in 1979.

(Pictured: The Seal of Milesius, the official seal of the Ó Súilleabháin Clann of Munster)