She was born in Farmington, Utah to Alamanda Bradford Richardson (1847–1921) and Linnie Gregory (1874–1955). Her father was a Presbyterian minister and her mother was one of the first to be baptized a member of the Latter- Day Saints (Mormons) Church in northeastern Texas.
She was a contralto. Her father was a distant relative to the Lee family, including Confederate General Robert East. Lee. Annette married Clinton Mills Dinwoodey (1901–1997) on 21 December 1928 and had two children, Anna Lou Dinwoodey Jenkins (1930–2004) and James Clinton Dinwoodey (1936–1994), both of whom are deceased. She performed for a large portion of her adult life.
She sang on KSL Radio from 1930 to 1945.
Dinwoodey lived in Salt Lake City, Utah and died just one month shy of her 101st birthday on January 21, 2007. She was buried in Farmington City Cemetery.
The photos of her singing career are archived at the University of Utah as the Annette Dinwoodey Collection. She began researching her family history at a young age, and later published a volume of books called "Our Virginia and Tennessee Paternal Ancestors: Richardson, Lee, Teel, Martin, Caffery, and Warren".
