Callan, Co. Kilkenny where the Ó Suilleabháins settled:

https://www.google.ie/maps/place/Callan,+Co.+Kilkenny/@52.5448207,-7.3920332,10z/data=!4m2!3m1!1s0x485d2c228587bc69:0xa00c7a99731e7b0

Ahlaoimh and his father, a hedge school master left Killarney around 1790 to South Kilkenny where he had been invited to establish a hedge school. The diary describes how the school was built in three days from sod of turf.

In time Amhlaoimh joined his father as a teacher and over time went int business as a draper and as apparently very properous. he was on good terms with the local Protestant gentry.

He kept the diary in Irish for his own pleasure. It is a beautifully written evocative work, of business, having hot toddies with his friens observing nature and the semi-illicit love of his life the beautiful Widow Máire de Barra (he was married),

There is in places a sense of longing, no matter how prosperous to the countryside of is birth. Ti and time again this emerges in their accounts of people from West Cork and Kerry who have left. One of the Jennings who left Dunmanway for Australia in the 1860s was always talking about the Bandon River according to family papers. In Casper Wyoming, people from Kilcrohane had the same longing.

https://openlibrary.org/works/OL6386592W/The_diary_of_Humphrey_O’Sullivan

http://en.wikipedia.org/wiki/Amhlaoibh_Ó_Súilleabháin