Which important Roman figure did Matthias Gelzer write a biography for, besides Julius Caesar and Cicero?
Matthias Gelzer: Matthias Gelzer (19 December 1886, Liestal – 23 July 1974, Frankfurt am Main) was a Swiss-German classical historian, known for his studies of the Roman Republic in regard to its politics and society. Matthias Gelzer:  He was the author of highly regarded biographies on Julius Caesar, Pompey and Cicero. Julius Caesar: Gaius Julius Caesar (Latin: CAIVS IVLIVS CAESAR, ] , born: 13 July 100 BC – 15 March 44 BC), usually called Julius Caesar, was a Roman politician and general who played a critical role in the events that led to the demise of the Roman Republic and the rise of the Roman Empire.
Pompey