Complex sentence: Oliver Loving (December 4,1812--September 25,1867) was a cattle rancher and pioneer of the cattle drive who with Charles Goodnight developed the Goodnight-Loving Trail.
Split into simpler sentences: Oliver Loving (December 4,1812--September 25,1867) was a rancher and cattle drover. Together with Charles Goodnight, he developed the Goodnight-Loving Trail.