He was back in Antwerp in October 1577 when he sold the rent he had inherited from his first wife. He married a second time in 1577. His second wife was Susanna Key; the daughter of the painter Willem Key who had already died by that time. He became an independent master in the Antwerp Guild of Saint Luke only in 1579. The artist was last mentioned in Antwerp in 1585. It is believed that around this time, which coincides with the Fall of Antwerp, he moved to England. Here he was likely active as a portrait artist. He probably worked for The Earl of Leicester. He was mentioned in a list of names of people from the Low Countries, probably from 1586. In the list he is referred to as "Hubert Bücheler (or Hubert Bucheler) in Greenwich". The Earl of Leicester who was possibly his last patron died in 1605. A picture maker by the name of Daniel Buckler mentioned in a list of foreign artists as having died in London in 1625 is believed to have been his son.