Herbert de Losinga came from a wealthy Norman family. The Norman Kings were keen to establish their compatriots in the English monastic houses.
Shortly after the death of William I, William Rufus brought de Losinga to England. In 1094, de Losinga moved the Bishop's seat he held in Thetford to Norwich, where he set work building a new cathedral and Benedictine Priory.
As the 1st Bishop of Norwich, he laid the foundation stone of Norwich Cathedral in 1096, although the building was not actually completed during his lifetime.