Simplify the following text for a Grade 5 native English-speaking person.
Original: Walther von der Vogelweide ( born about 1170 ; died possibly in WÃ 1\/4 rzburg around 1230 ) was a famous German poet and composer .
Simplified: Walther von der Vogelweide ( c. 1170 â `` c. 1230 ) is the most celebrated of the Middle High German lyric poets .