Emperor windows of <a href="https://en.wikipedia.org/wiki/Pepin_the_Short" class="extiw" title="w:Pepin the Short">Pepin the Short</a> and <a href="https://en.wikipedia.org/wiki/Louis_the_Pious" class="extiw" title="w:Louis the Pious">Louis the Pious</a> in <a href="https://en.wikipedia.org/wiki/Strasbourg_Cathedral" class="extiw" title="w:Strasbourg Cathedral">Strasbourg Cathedral</a>. The stained glass windows are mostly from the 14th century
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/68668328@N08">Jim Woodward</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/jim_woodward/6429565599/">779 1482</a>