Heilika of Lengenfeld
Heilika of Pettendorf-Lengenfeld (also known as "Eilika"; – 14 September 1170; buried in Ensdorf Abbey) was by marriage Countess Palatine of Bavaria. She was one of the two daughters of the edelfrei Lord Frederick III of Pettendorf-Lengenfeld-Hopfenohe, who died between 1112 and 1119 without a male heir. Her mother was a Heilika of Swabia the daughter of Duke Frederick I of Swabia and his wife, Agnes of Germany. As such, she was a granddaughter of Emperor Henry IV. She married Count Otto IV of Wittelsbach (d. 1156), the Count Palatine of Bavaria. In 1124, he  moved his residence from Scheyern Castle to Wittelsbach Castle in Aichach. He donated Scheyern Castle to the Benedictine Order, who turned it into a monastery. Otto and Heilike had eight children: Heilika's sister Heilwig was married to Count Gebhard I of Leuchtenberg and brought the Lordship of Waldeck into the marriage. Heilika died on 14 September 1170 and was buried in Ensdorf Abbey.