Johann Parler

He was the son of famous Gothic architect Peter Parler, the builder of Saint Vitus Cathedral and Charles Bridge in Prague.

His uncle (i.e. Peter’s brother) was Johannes von Gmünd also known as Johann Parler the Elder, a German Gothic master builder who was architect of Freiburg Minster and also rebuilt the damaged Basel Minster.

He worked alongside his father and older brother Wenzel Parler on St. Vitus.

He oversaw construction of the South Tower and was probably the designer of the tracery balustrade, which completes the facade.

[1] He then moved to Kutná Hora (German: Kuttenburg), where he became master builder of St. Barbara's Church.