John William Friso is the most recent common ancestor of what
Dutch monarchs family tree The following is a family tree for the Princes of Orange, a line which culminated in the Dutch monarchy with the accession of Prince William VI to the newly created throne of the Netherlands in 1815. Dates given are those of birth and death; for Princes of Orange (shown in bold), the intermediate date is the date of accession to the Princedom. By virtue of his marriage to Mary II of England, Prince William III, himself a grandson of Charles I of England, became King of England 1689–1702 (jointly with Mary II until her death in 1694) following the overthrow of his uncle and father-in-law James II of England in the Glorious Revolution. The family lineage is of note as John William Friso is the most recent common ancestor of all the current monarchs of Europe.
Bile (Irish legend) Bilé is a character in the "Lebor Gabála Érenn", a medieval Christian history of Ireland and the Irish (or Gaels), and in the genealogies of John O'Hart based on this tradition. He is described as a king of Galicia, an ancestor of the Gaels, the son of Breogan, and the father of Milesius. The "Lebor Gabála" purports to be an account of the Gaels' descent from Adam through the sons of Noah and how they came to Ireland. The tale relates that the Gaels spent 440 years wandering the Earth and underwent a series of tribulations, loosely based on the tale of the Israelites in the Old Testament. Eventually, the Gaels sailed to Iberia and conquered it. There, one of their leaders, Breogán, founded a city called Brigantia and built a great tower. From the top of the tower, his son Íth glimpses Ireland. The Gaels—including some of Breogán's sons—sailed to Ireland from Brigantia and took it from the Tuatha Dé Danann, the Irish pagan gods. Brigantia likely refers to A Coruña in Galicia (which was then known as Brigantium) and Breogán's tower is likely based on the Tower of Hercules (which was built at A Coruña by the Romans) or the Tower of Babel. The idea that the Irish Gaels came from Iberia may be based on the similarity of the names "Iberia" and "Hibernia" and the names "Galicia" and "Gael". Bilé is listed as the father of Fuat, a son who traveled to Inis Magdana, Moagdéda, or Mor-Oc Diada ("Great Young Divine"), an island where no man could tell a lie; Fuat brought a piece of sod from Inis Mor-Oc Diada back to Ireland, which he placed under his seat of judgement, and which turned upside down whenever he spoke a lie.