Royal descendants of John William Friso

The royal descendants of John William Friso, Prince of Orange currently occupy all the hereditary European royal thrones, with Friso and his wife, Landgravine Marie Louise of Hesse-Kassel, being the most recent common ancestors of all the European monarchs. Due to the intermarriage of the European royal houses, many monarchs are descended from Friso in more than one way. Through history, Friso has also been the ancestor of many monarchs whose thrones no longer exist.

William, Prince of Albania, the only ruler of the Principality of Albania, was descended from Friso through his son in two ways:

With the death of William's son, Carol Victor, the line became extinct.

Charles I of Austria, the last reigning Emperor of Austria and King of Hungary, was descended from Friso through his daughter:

Frederick II, Grand Duke of Baden, the last reigning Grand Duke of Baden, a constituent of the German Empire, was descended from Friso through his daughter:

Frederick II had no children, so upon his death his first cousin Prince Maximilian of Baden became the pretender. Here is his lineage:

Maximilian's grandson, also named Maximilian, and the current pretender, is additionally descended from Friso through his mother's lineage:

King Ludwig III of Bavaria, the last reigning Bavarian monarch, was not descended from Friso, but his son, Rupprecht, Crown Prince of Bavaria, was through Friso's son:

The Dukes of Bavaria, beginning with Rupprecht, are also the heirs to the Jacobite claim to the British thrones.