The other coat of arms which I ran across both inside and outside of the Cathedral of Our Lady in Antwerp, Belgium, was that - with some differences - of the Violieren.
The Violieren (wallflower or gillyflower) was a chamber of rhetoric that dates back to the 15th century in Antwerp, when it was a social drama society with close links to the Guild of Saint Luke. It was one of three drama guilds in the city, the other two being the Goudbloem and the Olyftack. In 1660 the Violieren merged with former rival Olyftack, and in 1762 the society was dissolved altogether.
The several depictions of the arms of the Violieren demonstrate their close link to the Guild of St. Luke, a city guild for painters and artists, through the use of the winged ox of St. Luke.