Map of Croatia —
Photo Credit: By OCHA, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=32295727

Coat of arms of Croatia —
Photo Credit: By Croatian Parliament - Public Domain, https://commons.wikimedia.org/w/index.php?curid=3325628

Saint Richardis —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=10408957

Charles III the Fat —
Photo Credit: By Louis-Félix Amiel - photo.rmn.fr, Public Domain, https://commons.wikimedia.org/w/index.php?curid=47490350

Carolingian Empire — In March 880 the sons of Louis the Stammerer divided their father's kingdom: Louis III received the northern part (colored purple), called Neustria or sometimes simply Francia and Carloman II get the blue area.
Photo Credit: By Niconaike - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=39615802

Carloman II of France — cropped
Photo Credit: By Charles Auguste Guillaume Henri François Louis de Steuben - Public Domain, https://commons.wikimedia.org/w/index.php?curid=3959330

Louis III & Carloman II — Eldest 2 sons of Louis II the Stammerer
Photo Credit: By Charles de Steuben - Public Domain, https://commons.wikimedia.org/w/index.php?curid=3763440

King Louis III of France — cropped
Photo Credit: By Charles de Steuben - Public Domain, https://commons.wikimedia.org/w/index.php?curid=3763440

Charles the Simple —
Photo Credit: By Georges Rouget - Public Domain, https://commons.wikimedia.org/w/index.php?curid=3710923

Louis the Stammerer —
Photo Credit: By Louis-Félix Amiel - Public Domain, https://commons.wikimedia.org/w/index.php?curid=47490744

Family tree of Theophylact I — Clearly, this family is in control of the papacy
Photo Credit: https://en.wikipedia.org/wiki/Theophylact_I,_Count_of_Tusculum