Louis of Enghien (d. March 17, 1394, Conversano) titular Duke of Athens, Count of Brienne and Lord of Enghien 1381–1394, Count of Conversano 1356–1394. His coat-of-arms was "Enghien (gyronny of eight argent and sable crusilly or), a label gules bezantee".
Louis was the fourth son of Walter III of Enghien and Isabella of Brienne. When his mother divided the inheritance of his uncle Walter VI of Brienne among her sons, he received the title of Count of Conversano. In 1370, he and his brothers, including John of Enghien, wrote to the Doge of Venice to request Venetian aid in reclaiming Athens from the Catalan Company, but help was not forthcoming. On the death of his childless nephew Walter V of Enghien in 1381, he also became titular Duke of Athens, Count of Brienne and Lord of Enghien. He married Giovanna of Sanseverino, and they had four daughters: Margaret, Yolanda, Isabella, and Helena. On his death on March 17, 1394, his titles were inherited by his eldest daughter, Margaret (born 1365). In 1380, Margaret married John of Luxembourg, Sire of Beauvois (1370-1397), son of Guy of Luxembourg and Mahaut of Châtillon, by whom she had issue, including Peter of Luxembourg, Count of St. Pol, of Brienne and of Conversano, and John II of Luxembourg, Count of Ligny. Peter married in his own turn, Margaret de Baux, by whom he had nine children. Peter and Margaret were the maternal grandparents of Queen consort Elizabeth Woodville and the ancestors of Mary, Queen of Scots.
| Preceded by Walter VII |
Count of Brienne 1381–1394 |
Succeeded by Margaret |