Career
A Dominican friar, he was appointed the Bishop of the Diocese of Kilmore by Pope Benedict XIV on 6 February 1747. His episcopal ordination took place in Dublin on 1 May 1747. The principal consecrator was the Most Reverend John Linegar, Archbishop of Dublin.
After a long illness, Bishop Richardson died in Dublin on 29 January 1753, aged 52, and was buried in Street James" Cemetery, Dublin.