Career
About 1440 Juan de Colonia was invited by Alfonso de Cartagena, the then bishop of Burgos to work on Burgos Cathedral. He also worked on the reconstruction of Miraflores Charterhouse. While working in Burgos Juan got married to a local woman María Fernández.
The Grove Encyclopedia of Medieval Art and Architecture, Volume 1, Oxford, 2012, p.
40, p.460.