Complex sentence: Coxeter named these polygons after John Flinders Petrie, who first realized the importance of the skew polygon that now bears his name, was the only son of Sir W. M. Flinders Petrie, the great Egyptologist.
Split into simpler sentences: Coxeter named these polygons after John Flinders Petrie, who first realized the importance of the skew polygon that now bears his name. He was the only son of Sir W. M. Flinders Petrie, the great Egyptologist.