Louis J. Preston, Jr., 80, of Marana, AZ passed away November 6, 2010 in Tucson, AZ. He was born in Mamaroneck, New York in 1930 to Louis and Mae Preston. He moved to Arizona in 1978. Louis is survived by his son, Eugene and his wife Alice; and his significant other, Lavonne. A Memorial Service will be held at 10:00 am on Saturday, November 20, 2010 at Vistoso Funeral Home, 2285 E. Rancho Vistoso Blvd. Oro Valley, Arizona. Reverend Monte J. Baker of Vista de la Montana UMC will be officiating.