LOUIS (893-911), surnamed the "Child," king of the Franks, son of the emperor Arnulf, was born at Ottingen, designated by Arnulf as his successor in Germany in 897, and crowned on the 4th of February 900. Although he never received the imperial crown, he is sometimes referred to as the emperor Louis IV. His chief adviser was Hatto I., archbishop of Mainz; and during his reign the kingdom was ravaged by Hungarians and torn with internal strife. He appears to have passed his time in journeys from place to place, and in 910 was the nominal leader of an expedition against the Hungarians which was defeated near Augsburg. Louis, who was the last of the German Carolingians, died in August or September 911 and was buried at Regensburg. See Regino von Prüm, "Chronicon," in the _Monumenta Germaniae historica. Scriptores_, Band i. (Hanover and Berlin, 1826); E. Dümmler, _Geschichte des ostfränkischen Reichs_ (Leipzig, 1887-1888); O. Dietrich, _Beiträge zur Geschichte Arnolfs von Kärnthen und Ludwigs des Kindes_ (Berlin, 1890); and E. Mühlbacher, _Die Regesten des Kaiserreichs unter den Karolingern_ (Innsbruck, 1881). (A. W. H.*) LOUIS OF NASSAU (1538-1574), son of William, count of Nassau, and Juliana von Stolberg, and younger brother of William the Silent, took an active part in the revolt of the Netherlands against Spanish domination. He was one of the leaders of the league of nobles who signed the document known as "the Compromise" in 1566, and a little later was a member of the deputation who presented the petition of grievances called "the Request" to the regent, Margaret of Parma. It was on this occasion that the appellation of "the Beggars" (_les Gueux_) was first given to the opponents of King Philip's policy. On the arrival of Alva at Brussels, Count Louis, with his brother William, withdrew from the Netherlands and raised a body of troops in defence of the patriot cause. In the spring of 1568 Louis invaded Friesland, and at Heiligerlee, on the 23rd of May, completely defeated a Spanish force under Count Aremberg, who was killed. Alva then advanced to meet the invaders with a large army, and at Jemmingen (July 21), with very slight loss, annihilated the levies of Louis, who himself escaped by swimming from the field across an estuary of the Ems. He now joined the army of his brother William, which had in October to beat a hasty retreat before Alva's superior skill. Then Louis, in company with his brothers William and Henry, made his way across the French frontier to the camp of the Huguenot leader, Admiral Coligny. Louis took an active part in the campaign and fought heroically at Jarnac and Moncontour. In 1572 Louis, not deterred by previous disaster, raised a small force in France, and, suddenly entering Hainaut, captured Mons (May 23). Here he was besieged by Don Frederick of Toledo, Alva's natural son, who blockaded all approach to the town. William made an attempt to relieve his brother,