Suger

Suger (; French: [syʒɛʁ]; Latin: Sugerius; c. 1081 – 13 January 1151) was a French abbot and statesman. He was a key advisor to King Louis VI and his son Louis VII, acting as the latter's regent during the Second Crusade. His writings are seminal texts for early 12th-century Capetian history, and his reconstruction of the Basilica of Saint-Denis, where he was abbot, was instrumental in creating the Gothic architecture style.

Notable works: Basilica of Saint-Denis, Vita Ludovici Grossi regis, De ordinatione, Libellus alter de consecratione ecclesiae sancti Dionysii, Liber de rebus in administratione sua gestis, Letters

Source: Wikipedia — https://en.wikipedia.org/wiki/Suger