Long before Princess Elisabeth ever set foot in a Harvard lecture hall, a tired king with no children of his own rewrote the rules that would put her there as heir.
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There is a question I have put to every undergraduate who ever sat through my seminar on dynastic succession: how does a monarchy that spent a hundred and sixty years preferring sons over daughters end up, within two generations, naming a daughter heir without anyone particularly noticing it happen? Belgium answers the question rather neatly, though the answer requires going back further than most royal correspondents tend to bother.
King Baudouin acceded to the Belgian throne in 1951 and reigned, by any measure, faithfully; what he did not do, despite thirty years of marriage to Queen Fabiola, was produce an heir. By the early 1990s, nearing the end of his reign and with no child of his own to succeed him, Baudouin oversaw a constitutional amendment that altered Article 86 of the Belgian constitution: succession would no longer follow male-preference primogeniture — the eldest son, regardless of how many elder sisters preceded him — but absolute primogeniture, the eldest child, full stop.
It is worth noting what this amendment did not do. It was not retroactive. The new rule applied prospectively, to the descendants of King Albert II, then still known as Prince of Liège; it did not reshuffle the existing line of succession or unseat anyone already standing in it. Princess Astrid, Albert’s daughter, had married in 1984 under the old rules and consequently never sought the consent her brothers’ marriages required, since a daughter’s consent was, at the time, beside the point. The 1991 amendment quietly resolved this too, treating her as though she had asked all along.
The historical record is clear on why the reform mattered more in theory than in immediate practice: Baudouin’s heir was his brother Albert, not a daughter of his own, and Albert’s own son Philippe stood ahead of Astrid regardless of the new rule. The amendment changed nothing for the generation in line at the time. What it did was load a single, deliberate condition into the mechanism for every generation that followed.
That condition came due in 2001, with the birth of Philippe and Mathilde’s first child. Under the old constitution, a firstborn daughter would have waited indefinitely for a younger brother to overtake her. Under the amendment her grandfather’s generation had passed, she simply became heir. Princess Elisabeth is Duchess of Brabant in her own right, not as a placeholder for a future prince, and stands to become Belgium’s first queen regnant since the monarchy’s founding in 1831.
Norway took a comparable, if narrower, path only weeks ago, when its parliament moved to grant Princess Ingrid Alexandra constitutional standing as regent — a different mechanism solving an adjacent problem, but the impulse is the same: an old house adjusting its own rules to accommodate the daughters its dynasty actually produced. One is tempted to conclude that every monarchy currently rewriting itself is simply finishing an argument Belgium settled, with remarkably little fanfare, more than three decades ago.
Princess Elisabeth’s recent graduate work at Harvard’s Kennedy School is, in that light, less a personal milestone than a constitutional one finally catching up with itself; a king who had no heir of his body nonetheless arranged, with a single clause, for the heir his nephew would eventually have. The Plantagenets: The Warrior Kings and Queens Who Made England remains the definitive account of how legitimacy is built, contested, and occasionally legislated into being. Belgium’s revision is a quieter cousin of that same old story.
What happened to Article 86 in 1991 is still happening, in its way; we have simply stopped calling it a revolution and started calling it a graduation.
Edmund Calloway is Crown & Court’s Royal History correspondent. A retired Oxford professor with thirty years studying European dynastic history, he writes with the unhurried authority of someone who has spent considerably more time in archives than in front of cameras.
“History doesn’t repeat itself — but dynasties certainly do.”
