On this hill, Dr. Dean Jewett Locke and his brother Elmer H. Locke built the first cabin in this section in 1851 and, disturbed by grizzly bears, spent their first nights in the oak trees. Dr. Locke, physician for the Boston and Newton Joint Stock Company, left Boston on April 16, 1849, crossed the plains, and arrived at Sacramento on Sept. 16, 1849. He built and maintained a ford across the Mokelumne River, and because of this his wife, Delia Hanford Locke, in 1859 named the town he laid out on his ranch Lockeford. His father, Luther Locke, was postmaster of the first post office established there in 1861. Dr. Locke was born in Langdon, N.H., on April 16, 1823, and died at Lockeford on May 4, 1887.