Complex sentence: George Campbell (1850--April 14,1881) was a one-time town Marshal for El Paso, Texas, having served from mid- 1880 until April 1881, when he was replaced by a new town Marshal Dallas Stoudenmire.
Split into simpler sentences: George Campbell (1850--April 14,1881) was a one-time town Marshal for El Paso, Texas. He served from mid- 1880 until April 1881, when he was replaced by a new town Marshal Dallas Stoudenmire.