Ramiro I of Aragon — 15th century manuscript Genealogies of the Counts of Barcelona
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=10410048

Constance of Aragon —
Photo Credit: By Szilágyi Sándor - Public Domain, https://commons.wikimedia.org/w/index.php?curid=7477475

Maria of Brabant —
Photo Credit: By Brunswyk - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=26300881

Marriage of Maria and Otto IV — from a 15th-century manuscript of the Brabantsche Yeesten by Jan van Boendale
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=48804917

Beatrice of Swabia —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=25677241

Isaac II Angelos —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=111923526

Frederick Barbarossa with his sons Henry and Philip — from Peter of Eboli Liber ad honorem Augusti, 1196. Burgerbibliothek of Berne, Codex 120 II, fol. 143r.
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=5514123

Beatrice I, Countess of Burgundy —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=11899463

Count Palatine Otto VIII of Wittelsbach kills Philip of Swabia — Miniature from the Sächsische Weltchronik, Northern Germany, early 14th century, Berlin
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=14639613

Philip of Swabia — Chronica Sancti Pantaleonis, Köln, Kloster St. Pantaleon, ca. 1237. Wolfenbüttel, Herzog August Library, Cod. Guelf. 74.3 Aug. 2°.
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=23244726

Otto IV and Pope Innocent III shake hands —
Photo Credit: By Hagenau - Public Domain, https://commons.wikimedia.org/w/index.php?curid=454337