Overview
Chad (died 2 March 672) was a prominent 7th-century Anglo-Saxon Catholic monk who became abbot of several monasteries, Bishop of the Northumbrians and subsequently Bishop of the Mercians and Lindsey People. He was later canonised as a saint.
He was the brother of Cedd, also a saint. He features strongly in the work of the Venerable Bede and is credited, together with Cedd, with introducing Christianity to the Mercian kingdom.
Sources
Most of our knowledge of Chad comes from the writings of the Venerable Bede. Bede tells us that he obtained his information about Chad and his brother, Cedd, from the monks of Lastingham, where both were abbots. Bede also refers to information he received from Trumbert, "who tutored me in the Scriptures and who had been educated in the monastery by that master", i.e. Chad. In other words, Bede considered himself to stand in the spiritual lineage of Chad and had gathered information from at least one who knew him personally.
From Wikipedia (CC BY-SA 4.0).