In 1847 Marshall traveled from California to Utah with discharged members of the Mormon Battalion. He traveled back to California on a business trip with his father (Jefferson Hunt) and others late in 1850 but was back in Utah by February 1851. Marshall married Sarah Ann Runyon at Big Cottonwood, Utah on 15 May 1851. He and his wife returned to San Bernadino, California by September 1852. It was here that three of their daughters were born. Their next child was born at Smithfield, Utah in 1859.