John Marsh House
[new_royalslider id="53"] [ps2id url='#scroll-down'][/ps2id] John Marsh House Cowell Ranch/John Marsh State Historic Park, Contra Costa County, California The John Marsh House is an 1856 sandstone mansion built by California pioneer John Marsh. He first settled in the area in the 1830s and was a major promoter, along with John...