Simplify the following text for a Grade 6 native English-speaking person.
Original: Sand 's father , Maurice Dupin , was the grandson of the Marshal General of France , Maurice , Comte de Saxe , himself an illegitimate son of Augustus II the Strong , King of Poland and a Saxon elector , and a cousin to the sixth degree to the kings of France Louis XVI , Louis XVIII and Charles X. Sand 's mother , Sophie-Victoire Delaborde , was a commoner .
Simplified: Sand 's father , Maurice Dupin , was the grandson of the Marshall General of France , Maurice , Comte de Saxe . He was also a distant relative of Louis XVI .