Lamberto, Lord of Monaco diplomacy and the sword with equal talent". He also established the Grimaldi motto "With God's help." He and Claudine had at least six children; Lamberto, Lord of Monaco Lamberto Grimaldi (c. 1420 – March 1494) was Lord of Monaco from 16 March 1458. He was married to his cousin Claudine Grimaldi in 1465 to secure the Grimaldi inheritance of Monaco that by the small state's constitution could only pass to male heirs. Lamberto was of the branch of the Grimaldi family which had settled in Antibes while Claudine was of the more powerful Monaco branch. Lamberto assumed the reins of
Jacques I, Prince of Monaco Jacques I, Prince of Monaco Jacques Goÿon de Matignon (Jacques François Léonor; 21 November 1689 – 23 April 1751) was Count of Thorigny, Prince of Monaco as Jacques I, and the fourth Duke of Valentinois from 1731 until 1733. Jacques came from an ancient Norman family. "Thorigny" is now called Torigni-sur-Vire, where the "Mairie" is the former family chateau. His uncle was Marshal Charles Auguste de Goÿon de Matignon. He was a son of Jacques Goÿon de Matignon, "jure uxoris" Comte de Thorigny, and Charlotte Goyon de Matignon, Comtesse de Thorigny "suo jure". When Antonio I of Monaco and his