 Complete the following phrase:  He was the son of Count Rudolph II of Habsburg and Agnes of Staufen. About 1217 Albert married Hedwig Heilwig, daughter of Count Ulrich of Kyburg died 1237 and Anna of Zähringen. He was present at the signing of the Golden Bull of Rimini in March 1226. Upon the death of his father in 1232 he divided his familys estates with his brother Rudolph III, whereby he retained the ancestral seat at Habsburg Castle. A follower of Emperor Frederick II of Hohenstaufen, he took part in the 