Louis IX  (German : Ludwig IX, Herzog von Bayern-Landshut , also known as Louis the Rich ; 23 February 1417 – 18 January 1479) was Duke of Bavaria-Landshut  from 1450. He was a son of Henry XVI the Rich  and Margaret of Austria.[ 1] University of Ingolstadt  (now the University of Munich ).
Louis IX and his wife Amalia of Saxony. 
Biography 
Louis succeeded his father in 1450. He was the second of the three famous rich dukes who reigned in Bavaria-Landshut in the 15th century. Their residence was Trausnitz Castle  in Landshut, a fortification which attained enormous dimensions.
Louis invaded the imperial free cities  of Dinkelsbühl  and Donauwörth  in 1458, and disputed with Frederick III, Holy Roman Emperor  until peace was made in Prague in 1463. In 1462, Louis defeated his enemy Albert III, Margrave of Brandenburg , who tried to extend his influence in Franconia  in the battle of Giengen . Louis expelled all Jews who rejected baptism from his duchy.[ 1] 
Louis founded a university in Ingolstadt  in 1472, which was moved to Landshut  in 1800 and finally to Munich  in 1826; in 1802, it was renamed Ludwig-Maximilians-University . In 1475 he organized the Landshut Wedding  of his son George with the princess Hedwig Jagiellon , a daughter of King Casimir IV of Poland .
Family and children 
On 21 March 1452 Louis was married with Princess Amalia of Saxony  (4 April 1436 – 19 October 1501), daughter of Frederick II, Elector of Saxony .[ 1] 
Elisabeth (c. 1453 – 1457) 
George, Duke of Bavaria  (15 August 1455 – 1 December 1503)Margaret  (7 November 1456 – 25 February 1501), married on 21 February 1474 to Philip, Elector Palatine Anna (c. 1462–1462) 
Ancestors 
Ancestors of Louis IX, Duke of Bavaria                   16. Louis IV, Holy Roman Emperor  (= 28)             8. Stephen II, Duke of Bavaria                    17. Beatrice of Silesia              4. Frederick, Duke of Bavaria                        18. Frederick III of Sicily              9. Elisabeth of Sicily                    19. Eleanor of Anjou              2. Henry XVI, Duke of Bavaria                            20. Stefano Visconti              10. Bernabò Visconti                    21. Valentina Doria             5. Maddalena Visconti                        22. Mastino II della Scala              11. Beatrice Regina della Scala                    23. Taddea da Carrara             1. Louis IX, Duke of Bavaria                              24. Albert II of Austria              12. Albert III, Duke of Austria                    25. Johanna of Pfirt              6. Albert IV, Duke of Austria                        26. Frederick V, Burgrave of Nuremberg              13. Beatrix of Nuremberg                    27. Elisabeth of Meissen              3. Margarete of Austria                           28. Louis IV, Holy Roman Emperor  (= 16)             14. Albert I, Duke of Bavaria                    29. Margaret II, Countess of Hainault              7. Joanna Sophia of Bavaria                        30. Louis I of Brzeg              15. Margaret of Brieg                    31. Agnes of Żagań                                       
The wedding of his son George with the Polish princess Hedwig Jagiellon  in 1475 was celebrated in Landshut with one of the most splendid festivals of the Middle Age.
References 
Garibald I  (555–591) Tassilo I  (591–610) Garibald II  (610–625) Theodo  (c.680–716) Theodbert  (c.716–c.719) Theobald  (c.716–c.719) Tassilo II  (c.716–c.719) Grimoald  (715–725) Hugbert  (725–736) Odilo  (736–748) Grifo  (748) Tassilo III  (748–788) Louis II the German  (King: 817–843) Carloman  (King: 876–880) Louis III the Younger  (King: 880–882) Charles the Fat  (King: 882–887) Engeldeo  (Margrave: 890–895) Luitpold  (Margrave: 895–907) Arnulf  (907–937) Eberhard  (937–938) Berthold  (938–947) Henry I  (947–955) Henry II the Quarrelsome  (955–976, 985–995) Otto I  (976–982) Henry III the Younger  (983–985) Henry IV  (995–1004, 1009–1017) Henry V  (1004–1009, 1017–1026) Henry VI  (1026–1042) Henry VII  (1042–1047) Conrad I  (1049–1053) Henry VIII  (1053–1054, 1055–1061) Conrad II  (1054–1055) Otto of Nordheim  (1061–1070) Welf I  (1070–1077, 1096–1101) Henry VIII  (1077–1096) Welf II  (1101–1120) Henry IX the Black  (1120–1126) Henry X  (1126–1138) Leopold I  (1139–1141) Henry XI Jasomirgott  (1143–1156) Henry XII the Lion  (1156–1180) Otto the Redhead  (1180–1183) Agnes of Loon  (Regent: 1183–1191) Louis I  (1183–1231) Otto the Illustrious  (1231–1253) Louis II the Strict  (1253–1255; Upper: 1255–1294) Henry XIII  (Lower: 1253–1290) Louis III  (Lower: 1290–1296) Stephen I  (Lower: 1290–1310) Otto III  (Lower: 1290–1312) Matilda  (Upper: Regent: 1294–1302) Rudolph I  (Upper: 1294–1317) Henry XV the Natternberger  (Lower: 1312–1333) Otto VI  (Lower: 1310–1334) Henry XIV  (Lower: 1310–1339) John I the Child  (Lower: 1339–1340) Louis IV  (Upper: 1301–1340; 1340–1347) Otto V ,  (1347–1349; Upper: 1349–1351; Landshut: 1373–1379) Louis V the Brandenburger ,  (1347–1349; Upper: 1349–1361) Meinhard I  (Upper: 1361–1363) Louis VI ,  (1347–1365) Stephen II ,  (1347–1349; Lower: 1349–1353; Landshut: 1353–1375; Upper: 1363) William I ,  (1347–1349; Lower: 1349–1353; Straubing: 1353–1388) Albert I ,  (1347–1349; Lower: 1349–1353; Straubing: 1353–1404) Albert II  (Straubing: 1389–1397) William II  (Straubing: 1404–1417) Jacqueline  (Straubing: 1417-1429) John III the Pitiless  (Straubing: 1417-1425) William III  (Munich: 1397–1435; Straubing: 1429–1435) Ernest  (Munich: 1397–1438; Straubing: 1429–1438) Frederick I the Wise  (1375–1392; Landshut: 1392–1393) John II  (1375–1392; Munich: 1392–1397) Stephen III the Magnificent  (1375–1392; Ingolstadt: 1392–1413) Louis VII the Bearded  (Ingolstadt: 1413–1443) Louis VIII the Hunchback  (Ingolstadt: 1443–1445) Henry XVI the Rich  (Landshut: 1393–1450; Ingolstadt: 1447–1450) Albert III  (Munich: 1438–1460) John IV  (Munich: 1460–1463) Sigismund  (Munich: 1460–1467; Dachau: 1467–1501)  (Landshut: 1450–1479)  
George I the Rich  (Landshut: 1479–1503) Albert IV the Wise  (Munich: 1465–1505; 1505–1508) William IV the Steadfast  (Munich: 1460–1508; Landshut: 1503–1508; 1508–1550) Louis X , Duke (1516–1545) Albert V the Magnanimous  (1550–1579) William V the Pious  (1579–1597) Maximilian I  (1597–1623)  
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