Ludovic Lefebvre, born in 1971 in Auxerre, Burgundy, is a renowned French chef and restaurateur. His culinary journey began in his grandmother's kitchen, and he later trained at esteemed establishments such as L’Esperance in Vézelay and under chefs like Pierre Gagnaire and Alain Passard. In 1996, he embarked on his American culinary adventure in Los Angeles, working at L'Orangerie and later opening his own restaurants. Notably, he introduced the concept of pop-up restaurants with LudoBites and ventured into the food truck business with LudoTruc, which later expanded into a brick and mortar location called LudoBird. Lefebvre's ventures also include the Michelin-starred Trois Mec, Petit Trois, and a series of successful television appearances, where he showcased his culinary prowess and charisma. Furthermore, he has authored acclaimed books such as "Crave: The Feast of the Five Senses" and "LudoBites: Recipes and Stories from the Pop-Up Restaurants of Ludo Lefebvre". In 2015, he was honored as a Chevalier of the Order of Arts and Letters and has been recognized by Relais & Châteaux as one of the World's 50 Greatest Chefs. Lefebvre resides in Sherman Oaks, California, with his wife Kristine and their children.

Ludo Martens (12 March 1946 – 5 June 2011) was a prominent Belgian far-left activist, best known as the founder and inaugural leader of the Workers' Party of Belgium. He was a prolific author, focusing on the political history of Central Africa and the Soviet Union. Martens' political activism began with the formation of the group Alle macht aan de arbeiders (All Power to the Workers) in 1968, which later evolved into the Workers' Party of Belgium in 1979. Notably, he held the position of party president until 2008. Martens had a significant impact on international relations, being the last foreigner to meet North Korean president Kim Il Sung before his passing in 1994. Martens' intellectual pursuits extended to writing, with works such as "Pierre Mulele, ou, La seconde vie de Patrice Lumumba," "Un autre regard sur Staline," and "Kabila et la révolution congolaise: panafricanisme ou néocolonialisme?" He passed away on 5 June 2011 after battling a prolonged illness. Martens' controversial views on Stalin and the Soviet Union, as depicted in his book "Another View of Stalin," have sparked diverse interpretations and discussions within political circles.

Ludo (Ludwig) Moritz Hartmann (2 March 1865, Stuttgart – 14 November 1924) was a prominent Austrian historian, diplomat, and Social Democratic politician known for his anti-metaphysical and materialist approach to history. Born to poet Moritz Hartmann and Bertha, daughter of Achilles Roediger, a Genevan headmaster, Hartmann's early life was marked by his father's long-term illness, which led him to spend time with a diverse array of intellectuals and professionals. Following his father's passing, Hartmann's education was prioritized by his mother with support from influential figures. He pursued studies in history, legal history, and political economy at the Universities of Vienna and Berlin, learning from notable scholars such as Theodor Mommsen. Hartmann advocated for popular education and established a popular university course at the People's College, leaving a lasting legacy in the form of the Ludo Hartmann prize and the Ludo-Hartmann-Platz in Ottakring, Vienna. His works, including "The early mediaeval state; Byzantium, Italy and the West," have left a lasting impact on historical scholarship.