Complex sentence: Francis Gurney du Pont (1850--1904) was the creator of smokeless gunpowder and the youngest son of Alexis I. du Pont and the grandson of E. I. du Pont.
Split into simpler sentences: Francis Gurney du Pont (1850--1904) was the creator of smokeless gunpowder. He was the youngest son of Alexis I. du Pont and the grandson of E. I. du Pont.