Welf IV. HENRY IV., Duke of Bavaria, _d._ 1101. _d._ 1106. | | +------------+------------+ | | | | Welf V., _d._ 1120, Henry the Black, Frederick of Büren, _m._ 1. Agnes. _m._ 2. Leopold III. of Babenberg, _m._ Countess Matilda. Duke of Bavaria, _d._ 1126. Duke of Swabia, | Margrave of Austria. | _d._ 1105. | | (1) | (1) (2) (2) +-----------------+--+---------+ +----------------------------------+---------------------+-------------+ | | | | | | | Henry the Proud, Welf VI. Judith, _m._ 1. Frederick, _m._ 2. Agnes of CONRAD III. Henry Jasomirgott Otto, _d._ 1139, _d._ 1191. Duke of Swabia, Saarbrücken. (1138–1152). Duke of Austria, Bishop of _m._ Gertrude, daughter of | _d._ 1147. | 1156. Freising. Lothair of Supplinburg. Welf VII. (1) | (2) | | _d._ 1167 +---------+--------+ +------+------+ | | | | | | FREDERICK I. (Barbarossa), Conrad, Henry, Frederick of Henry the Lion, (1152–1190), Count Palatine, _d._ 1150. Rothenburg, _m._ Matilda of England. _m._ Beatrice of Burgundy. _d._ 1195. Duke of Swabia, | | _d._ 1167. | | +--------------------------+ +-----------+-------------------+-----------------+ | | | | | OTTO IV., _d._ 1218. William, HENRY VI. Frederick, PHILIP of Swabia, _m._ 1. Beatrice, daughter of | (1190–1197), Duke of _d._ 1208. Philip of Swabia. Otto the Child, first _m._ Constance of Sicily. Swabia, | 2.