Complex sentence: Sylvanus "Hambone" Smith III (December 12,1940--June 14,1995) was famous at the time for his obesity, weighing approximately 1,000 lbs at his peak; making him one of the world's heaviest living person.
Split into simpler sentences: Sylvanus "Hambone" Smith III (December 12,1940--June 14,1995) was famous at the time for his obesity. At his peak, Hambone weighed approximately, making him one of the world's heaviest living person.