Complex sentence: Phil Coe (1839--1871), born Phillip Houston Coe, was an Old West gambler, soldier and businessman from Texas, and the business partner of gunfighter Ben Thompson in Abilene, Kansas.
Split into simpler sentences: Phil Coe (1839--1871), born Phillip Houston Coe, was a soldier, and Old West gambler and businessman from Texas. He became the business partner of gunfighter Ben Thompson in Abilene, Kansas.