Between 1165 and 1168 he taught at Cologne, and held a prebend at that city. In 1168 Gerard returned to England and took the oath of fealty to Henry II, which  Becket had rejected.
Between 1165 and 1168 he taught at Cologne, and held a benefice in that city. In 1168 Gerard returned to England and swore fealty to Henry II, which Becket had refused.