Sandra Day O'Connor, the first woman ever to serve on the United States Supreme Court, died Friday in Phoenix at the age of 93. According to Supreme Court sources, the cause of death was complications of dementia. Born on March 26, 1930, in El Paso, Texas, and raised in Arizona, she is survived by her sons, Scott, Brian, and Jay; six grandchildren; and her brother, Alan. O'Connor was appointed to the court in 1981 by President Ronald Reagan after working as a public attorney and serving in all three branches of government in Arizona.