Get our free mobile appKeep scrolling to learn the tragic tale of Colorado's Galvin Family. Who is Colorado's Galvin Family? The Galvin family originally consisted of two parents and 12 children; ten boys and two girls. Colorado's Galvin Family's Story is Troubling + TragicViolent outbursts were, unfortunately, a common occurrence in the Galvin household and have been attributed to the boys' mental illnesses. Historic Colorado Stone Home + a Fascinating and Tragic History The Hammar House in Castle Rock, Colorado, was built by a quarry owner in 1881 and has a fascinating, often tragic, history.