There is an article about Brian O'Higgins in Wikipedia. It begins
"Brian O'Higgins (Irish: Brian Ó hUigínn; 1 July 1882 – 10 March 1963), also known as Brian na Banban, was an Irish writer, poet, soldier and politician who was a founding member of Sinn Féin and served as President of the organisation from 1931 to 1933. He was a leading figure in the Gaelic revival movement and was widely regarded for his literary abilities."
(accessed 12 Jan 2021)
O'Higgins is also known for the greeting cards he published, with Celtic designs and self-penned verses.

He also wrote the lyrics of Moses Ri Tooral i Ay, a song about a Jewish pedlar who gets hauled into court for having writing in Irish on the side of his cart though it was actually Hebrew.