Charles Hedges McKinstry (1866-1961) was an engineer and army officer for the United States Military. He was a descendant of William Bradford (1589-1657) , governor of the Plymouth Bay Colony.
McKinstry was born on December 19, 1866, in San Francisco, California. He attended the United States Military Academy and graduated in 1888, number two of forty-four in his class.
McKinstry was an instructor of engineering in West Point for the Corps of Engineers at the Engineering School of Application from 1891 to 1893. On June 11, 1888, McKinstry made second lieutenant and on July 22, 1888, he was promoted to first lieutenant. On October 11, 1892, McKinstry became a captain. Then on July 5, 1898, he became a major. After becoming a major, McKinstry went on to be in charge of defensive works and harbors improvements in Key West from 1898 to 1900. From 1901 to 1903, he was at the Engineer School in Willets Point, New York, as an instructor, which included instruction in astronomy. McKinstry moved on to Southern California during 1903–1906 to work on fortifications, rivers and harbors. On January 1, 1906, he became a lieutenant colonel. In 1909, McKinstry became chief engineer in the Philippine Island Division until 1911. On February 27, 1912, he was promoted to brigadier general and then became commander of the 158th Field Artillery Brigade on August 5, 1917. In 1919, McKinstry retired as a colonel.
On January 10, 1920, Lillie Lawrence McKinstry, his wife, died in Miami, Florida. In 1924 he married Evelyn McCurdy Salisbury Wells, with whom he had three children. McKinstry regained his rank of brigadier general in June 1930. On November 29, 1961, McKinstry died in Santa Barbara, California, at the age of 94 and just a few weeks before his 95th birthday.