John of Heinsberg

Heinsberg was the son of John II of Loon by his first wife, Margaret of Gennep.

When Prince-Bishop John of Walenrode died suddenly in 1419, Heinsberg, despite his young age, was unanimously elected as his successor within three weeks.

[1] He was ordained priest on Christmas Eve 1419, consecrated as bishop in Lent 1420, and was invested with secular power as prince-bishop, on behalf of Sigismund, Holy Roman Emperor, in Frankfurt on 21 June 1420.

In 1442 he was present at the imperial coronation of Frederick III, Holy Roman Emperor, at Aachen (a city in his diocese), with an entourage of 250 noblemen.

[5] In 1456, under pressure from Philip the Good, Heinsberg resigned in favour of Louis de Bourbon.