John I of France

French Monarchy-
Capetian Dynasty
(direct Capetians branch)
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Hugh Capet
Children
   Robert II
Robert II
Children
   Henry I
   Robert I, Duke of
   Burgundy
Henry I
Children
   Philip I
   Hugh the Great, Count of
   Vermandois
Philip I
Children
   Louis VI
Louis VI
Children
   Louis VII
Louis VII
Children
   Mary, Countess of
   Champagne
   Philip II
   (Philip Augustus)
   Alys, Countess of Vexin
Philip II
(Philip Augustus)
Children
   Louis VIII
Louis VIII
Children
   Louis IX (Saint Louis)
   Count Robert I of Artois
   Alphonse, Count of
   Poitou and Toulouse
   Charles I of Anjou and
   Sicily
Louis IX (Saint Louis)
Children
   Philip III
   Robert, Count of
   Clermont
Philip III
Children
   Philip IV (Philip the Fair)
   Charles of Valois
   Margaret, Queen
   consort of England
Philip IV (Philip the Fair)
Children
   Louis X
   Philip V
   Isabella, Queen consort
   of England
   Charles IV
Louis X
Children
   Queen Joan II of Navarre
   John I Posthumus
John I Posthumous
Philip V
Charles IV

John I the Posthumous (French: Jean Ier le Posthume) (November 15, 1316 - November 20, 1316) was King of France for the five days he lived.

He was born a king on November 15, 1316, a member of the Capetian dynasty and the posthumous son of King Louis X and Clemence of Hungary.

Jean lived for only a few days and many believed his uncle, the future King Philippe V, caused his death in order to gain the throne. There were also stories that Philippe had the child kidnapped and substituted a dead child in his place. During the 1350s, a man claiming to be King Jean I appeared in Provence. He was quickly put in prison and died there.

Jean reigned for five days under his uncle's regency, until his death on November 20, 1316. The infant King was buried in Saint Denis Basilica. He was succeeded by his uncle, Philippe V. The other claimant was John's half-sister, the then four-year-old Princess Joan, daughter of Louis X's marriage with Marguerite of Burgundy.

It was at that point when the question of the force of Salic Law was resolved regarding the succession to the Throne of France.

John I's half-sister Jeanne, as a female, had a disputed claim to the throne of France: a female could not succeed to the throne of France if following the Salic law, however if following the feudal law (which had this far controlled the inheritance of almost all fiefs in France), Jeanne would have been the next monarch of France. (She did, however, have indeniable rights in the succession of Navarre where females are allowed - witness that kingdom being brought to Capetians by Louis' own mother. However, these claims were ignored until after the deaths of her uncles Philip V and Charles IV.)

A practical point obviously having impact on this legal interpretation was the rumors that Joan was a product of her mother's adultery and not at all a daughter of Louis X. Thus, an interpretation of law allowing only male succession quashed Joan's position altogether, and the danger of a bastard succeeding was avoided, without even examining her real birth.


Preceded by:
Louis X
King of France
1316
Succeeded by:
Philip V
King of Navarre
1316


See also: John I of France, 1316, 1350s, Alphonse of Toulouse, Alys, Countess of the Vexin, Capetian