Contra Costa County Biography PETER OLSEN Transcribed by Sally Kaleta, December, 2006. This file is part of the California Genealogy & History Archives http://www.rootsweb.ancestry.com/~cagha/index.htm Peter Olsen, one of the well-known and representative men of eastern Contra Costa County, was born July 8, 1849, in Sonderburg, Denmark. He received his education in the old country and learned the brickmaking trade, which he followed for seven years in his native land. At the age of twenty-one he came to America and settled in Nebraska, where he found employment, and in 1871 he removed to Carbon County, Wyoming, where he followed mining. He then went to Utah, where he worked in the silver mines for a period of two years, when he returned to Wyoming and followed mining, and later assisted in the construction of a large stone building and barns for the Wyoming Coal Company. He then went on a cattle ranch for two years. At this time the Indians were hostile in his section, and Mr. Olsen relates many narrow escapes from the red men where he was working. In 1874 he came to California and located in Antioch, where he became identified with the coal mines. In 1879 he purchased two hundred and forty acres in the Black Hills, where he engaged in the cattle and wood business for seven years. In 1885 he removed to Marsh Creek and rented a half-section and followed general farming. Later he purchased a lease and operated two hundred and ninety acres for twelve years. In 1912 he settled in Brentwood. Mr. Olsen was married on July 28, 1878, to Mary E. Nathan, a daughter of Daniel Nathan, who came to California via Cape Horn, and settled in Antioch, where he died thirty-five years ago. To Mr. and Mrs. Olsen have been born four children - Mabel Elizabeth, wife of Jacob Jacobsen, of Brentwood; Edward James, engaged in the grocery business in Oakland; Ralph, who is bookkeeper for R. W. Kinney, of Oakland; and Cecil, who died at the age of four years. Mr. Olsen is a Republican. Fraternally, he is a member of the I. O. O. F. and Rebekah lodges of Byron. Source: "The History of Contra Costa County, California," Elms Publ. Co., 1917, pp. 557-558.