Complex sentence: Lambert of Hersfeld (c.1024--c.1088), (also called Lampert) was a medieval chronicler, probably a Thuringian by birth, whose work represents a major source for the history of Germany and the Holy Roman Empire in the eleventh century.
Split into simpler sentences: Lambert of Hersfeld (c.1024--c.1088), (also called Lampert) was a medieval chronicler, probably a Thuringian by birth. His work represents a major source for the history of Germany and the Holy Roman Empire in the eleventh century.