John I of France, known as John the Posthumous, was born after the death of his father Louis X and lived only a few days in 1316. His brief life created a succession crisis that helped define later French rules on female succession.
John I of France also held the offices or ranks of King of France, King of Navarre, and sovereign of Navarre. John I of France belonged to the Capetian dynasty. John I of France was born in Paris.
Maurice Druon’s The Royal Succession turns the birth and death of the infant John I into the hinge of a dynastic crisis. Born after Louis X’s death, John survives only days, leaving Philip of Poitiers to convert a temporary regency into a claim to the French crown. Druon fictionalises the infant’s death as part of the series’ web of conspiracy, but the political consequence is historical: John’s brief reign strengthens the exclusion of Louis’s daughter Joan and helps establish the succession principle later associated with Salic law.