San Diego County Biographies ANDREW CASSIDY This file is part of the California Genealogy & History Archives http://www.rootsweb.ancestry.com/~cagha/index.htm One of the pioneer residents of San Diego is Andrew Cassidy, a native of county Cavan, Ireland. When seventeen years of age he emigrated to the United States, landing at Boston. Having had the advantage of an excellent education in his native land, he was well prepared to accept of a position which was offered him in the Engineer Corps at West Point, under the immediate direction of George B. McClellan. He remained at this point for three years, and from there went to Washington, where he was employed in the Coast Survey office, under Professor Bache. He remained in that position about a year, when he was ordered out to the Pacific coast with a party of five others, under Captain W. B. Trowbridge, of the Engineer Corps, U. S. A. The party came by way of the Isthmus, and landed at San Francisco in July, 1853. They were there engaged for about two months in putting up a self-registering gauge at Fort Point. Leaving one man in charge, the others started for San Diego. They chartered a schooner and made a series of observations on the way down the coast. They entered the harbor of San Diego, and landed at Point La Plaza, where they put up another gauge, and Cassidy was left in charge. He was stationed here in charge of meteorological and tide observations for seventeen years. During this period he made Old San Diego his headquarters the greater part of the time. In 1864 he saw an excellent opportunity to engage in stock-raising, and availed himself of it; he employed a man to take charge of the details, and only exercised a general supervision until he resigned his position in the coast survey. His ranch, which was then known as Soledad, situated twelve miles from Old Town, contained 1,000 acres of exceedingly rich land. He had on this place at times 1,000 head of cattle. The present town of Sorrento is upon this ranch. Mr. Cassidy continued in the stock business from 1864 to the beginning of the year 1887. He then sold out all his stock interests and subdivided his ranch, realizing a handsome sum from the proceeds of his land sales. Besides his interests at Sorrento he owns considerable city and suburban property. He served one term as City Trustee in 1865, and again in 1871 was elected County Supervisor for two terms (four years). In 1853 Mr. Cassidy began a collection in natural history, composed of birds, fishes, reptiles, moths, and all live animals of the smaller species. The collection of fish was particularly valuable, coming as it did from the Pacific ocean, the Colorado river and the Gulf of California. This collection was forwarded to the Smithsonian Institute, at Washington, District of Columbia, where his friend, Professor Henry, then held a position. Mr. Cassidy has been twice married, but is now a widower. He has one daughter, born to his second wife. Besides conducting his large farm interests Mr. Cassidy has been a true friend of San Diego, contributing his share toward the city's material advancement. Personally he is very courteous, and his address marks him as one who has mingled much with men of the world. He is extremely popular among his acquaintances, and everywhere regarded as at once a progressive and substantial citizen. SOURCE: An Illustrated History of Southern California: Embracing the Counties of San Diego, San Bernardino, Los Angeles and Orange, and the Peninsula of Lower California� Chicago: The Lewis Publishing Company, 1890. p.- 323-324