What is the name of the irish archbishop from the 17th century who calculated that the world is now approximately 6,000 years old?

The Usher chronology is a chronology of the history of the world. It was formulated from the Old Testament by James Usher. James Usher was the Archbishop of Armough (Irish church) from the 17th century. He calculated that the first day of creation was October 23, 4004 BC. Answer: Archbishop James Usher.