Original signature William Penn. The letter comes from a correspondent in Ballitore, Co. Kildare which had a Quaker settlement and it was where Edmund Burke received part of his education.

From 1832 Dublin Penny Journal in a book of the weekly issues owned by Dublin writer Sean O’Casey.

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

https://durrushistory.com/2011/11/07/dublin-penny-journal-journey-to-durrrus-1836/