Alonzo Allen was born in 1830. He came to the South St. Vrain Valley in 1860 and built the first log cabin and pioneered major agri/business enterprises. Along with his wife, Mary Dickens, he established the Allen House, Longmont’s first hotel. They were members of the Chicago-Colorado Colony, which settled Longmont. The town of Allenspark was named for Allen. He died in Longmont in 1915.