Complex sentence: In 1061 the dowager empress Agnes of Poitou enfeoffed the Saxon count Otto of Nordheim, nevertheless her son King Henry IV again seized the duchy on fallacious grounds, which ultimately led to the Saxon Rebellion of 1073.
Split into simpler sentences: In 1061 the dowager empress Agnes of Poitou enfeoffed the Saxon count Otto of Nordheim. Nevertheless, her son King Henry IV again seized the duchy on fallacious grounds, which ultimately led to the Saxon Rebellion of 1073.