Complex sentence: A new chair of German language and literature being founded for his benefit, he became professor extraordinarius (1841) and then professor ordinarius (1843); and in 1842 he married Louise Hermann, the daughter of his master and colleague.
Split into simpler sentences: A new chair of German language and literature was founded for his benefit, and he became professor extraordinarius (1841) and then professor ordinarius (1843). In 1842 he married Louise Hermann, the daughter of his master and colleague.