Brenda Jackson, mother of Dale Earnhardt Jr. and a longtime employee at JR Motorsports, has died after a battle with cancer. Jackson was 65. Jackson was the daughter of NASCAR fabricator Robert Gee, who built cars for various racers including the late Dale Earnhardt. She married Earnhardt in 1972, had two children, and Dale Jr. and Kelley. Jackson joined the race team owned by her two children as an accounting specialist in 2004 and was a tireless supporter of The Dale Jr. Foundation and other charitable efforts. She is survived by her husband, two children, a stepdaughter and six grandchildren.