 Henry asked the princes to give him time to consult with the princes and bishops about the matters relating to his abdication or reconciliation with his rebellious son Henry V (1106–25), and among the bishops faithful to him he mentioned the name of Burchard of Basle.After the death of Gregory VII, particularly after the election of Pope Urban II (1088–99), Burchard sought reconciliation with the Holy See; he became instrumental in the erection of several monasteries and other religious institutions.Among others, Burchard founded St. Alban's Abbey in Basle and the monastery of St. John, or Erlach Abbey, erected partly by his brother and partly by himself at Erlach in the neighbourhood of his ancestral castle.