Lithuanian coat of arms <i>Vytis</i> (<i>Pogonia</i>) from Marcin Bielski's book <i>Kronika Polska</i>, 1597. The Double Cross of the <a href="https://en.wikipedia.org/wiki/Jagiellonian_dynasty" class="extiw" title="w:Jagiellonian dynasty">Jagiellonian dynasty</a> is depicted on the horseback knight's shield.
<a href="https://en.wikipedia.org/wiki/Marcin_Bielski" class="extiw" title="w:Marcin Bielski">Marcin Bielski</a>
1597
<a rel="nofollow" class="external text" href="https://books.google.com/books?id=RwhlAAAAcAAJ&amp;redir_esc=y">Marcin Bielski's 1597 book <i>Kronika Polska M. Bielskiego. Nowo przez I. Bielskiego syná iego wydána</i></a> (page 6)