Heinrich der Löwe Welf, Herzog von Sachsen, Herzog von Bayern, was born circa 1130 in Ravensburg, Baden-Württemberg, Germany to Heinrich der Stolze (c1108-1139) and Gertrud von Sachsen (1115-1143) and died 6 August 1195 Braunschweig, Lower Saxony, Germany of unspecified causes. He married Clementia von Zähringen (-bef1167) 1147 JL . He married Matilda of England (1156-1189) 1 February 1168 JL in Minden, North Rhine-Westphalia, Germany.
Children
| Name | Birth | Death | Joined with |
| Gertrude von Braunschweig (c1155-1197) | 1155 | 1197 | Friedrich IV von Rothenburg (-1167) Knud VI of Denmark (1163-1202) |
| Name | Birth | Death | Joined with |
| Richenza von Braunschweig (1171-1210) | 1171 | 1210 | Geoffroy III du Perche (-1202) Enguerrand III de Coucy (c1182-1242) |
| Lothar von Braunschweig (c1174-1190) | |||
| Heinrich V. von Braunschweig (1175-1227) | 1175 | 28 April 1227 | Agnes von der Pfalz (1176-1204) Agnes von der Lausitz (?-1248) |
| Otto IV. von Braunschweig (1177-1218) | 1177 Braunschweig | 19 May 1218 Harzburg | Beatrix von Staufen (1198-1212) Maria van Brabant (1190-1260) |
| Eleanor von Braunschweig (1178-?) | |||
| Ingibiorg von Braunschweig (1180-?) | |||
| Son von Braunschweig (1182-1182) | |||
| Wilhelm von Braunschweig-Lüneburg (1184-1213) | 11 April 1184 Winchester, Hampshire, England, United Kingdom | 13 December 1213 Lüneburg, Lower Saxony, Germany | Helen of Denmark (c1174-1233) |
| Name | Birth | Death | Joined with |
| Matilda von Sachsen (1179-1209) | 1155 | 1209 | Heinrich Borwin I. zu Mecklenburg (?-1227) |
Footnotes (including sources)
| ‡ General |