[2] Hemming also dedicated himself to attending to the needs of seminaries and in providing theological resources to the priests and seminarians; he donated around 40 books to the cathedral and founded both a school and a hospital.

[3][4] The Turku Cathedral was damaged due to a fire in 1318 and so Hemming helped to finance the repairs after acquiring letters of indulgence from Pope John XXII.

In 1353, he had permission to transfer a third of the tithes the parish gathered as funds for the repairs while in 1354 he added books on the Church Fathers and works on Canon Law to the cathedral's collection.

In 1347, he travelled to the Kingdom of France for her with her Cistercian confessor Peter of Alvastra to visit Pope Clement VI in Avignon in order to convince him to go back to Rome and reform the Roman Curia.

Miracles were reported at his tomb and pilgrimages there began until such instances were recorded in 1400 when popular devotion reached an all-time high.

[2] Hemming became titled as Servant of God after Pope Alexander VI – on 16 July 1497 – granted his approval to the commencement of the cause for beatification.

[2] The canonization for the late bishop had been scheduled for 1530 but Pope Clement VII had to cancel it due to the Reformation.