A catalogue of the Deeds of Henri I, King of France (1031-1060)[36] mentions in this same period a Guinemer, Lord of Lillers, who had solicited the approval of the king for the construction of a church in his chateau, to be dedicated to Notre-Dame and Saint-Omer. The royal approval was given in 1043, completing the authorization of Baudouin, Count of Flanders, and of Dreu, Bishop of Therouanne at the request of Pope Gregory VI, to whom the builder had gone in person to ask consent for his enterprise. Was this Guinemer, like the pirate of Jerusalem, doing penance for some wrong? Thus we find two Guinemers in the eleventh century, one in Palestine, the other in Italy. About this same period the family probably left Flanders to settle in Brittany, where they remained until the Revolution. The corsair of Boulogne became a ship-builder at Saint-Malo, having his own reasons for changing parishes. The Flemish tradition then gives place to that of Brittany, which is authenticated by documents. One Olivier Guinemer gave a receipt in 1306 to the executors of Duke Jean II de Bretagne. He held a fief under Saint-Sauveur de Dinan, "on which the duke had settled tenants contrary to agreements." The executors, to liquidate the estate, had to pay immense sums for "indemnification, restitution and damages," and took care to "take receipts from all those to whom their commission obliged them to distribute money."[37] The Treaty of Guerande (April 11, 1365), which ended the war for the Breton succession and gave the Duchy to Jean de Montfort, though under the suzerainty of the King of France, is signed by thirty Breton knights, among whom is a Geoffrey Guinemer. A Mathelin Guinemer, squire, is mentioned in an act received at Bourges in 1418; while in 1464, an Yvon Guynemer, man-at-arms, is promoted to full pay, and he already spells his name with a _y_. [Footnote 36: _Catalogue des actes d'Henri I, Roi de France_ (1031-1060), by Frederic Soehnee, archivist at the National Archives.] [Footnote 37: _Histoire de Bretagne_, by Dom Lobineau (1707), Vol. I, p. 293. _Recherches sur la chevalerie du duche de Bretagne, by A. de Couffon de Kerdellech_, Vol. II (Nantes, Vincent Forest and Emile Grimaud, Printers and Publishers).]