The real template is
Template:House of Tudor. This page is a subsection of my user-space, housing a backup of the code. It is not active in any mainspace.
This template should be called by passing a variable to it for the closest monarch of the House of Tudor. For example, {{House of Tudor|mary1}}. This calls only the relevant part of the template, as well as getting around the fair use violation that would occur if the arms images were directly on this template.