When Pearl Winifred Leaverton was born on 19 March 1885, in Adel, Dallas, Iowa, United States, her father, Aaron Nathan Leaverton, was 20 and her mother, Mary Louella Garoutte, was 22. She married Alva Thornberg on 2 October 1909, in Boone, Iowa, United States. She lived in Downey Judicial Township, Los Angeles, California, United States in 1940 and Los Angeles, Los Angeles, California, United States in 1943. She died on 24 May 1949, in Los Angeles, California, United States, at the age of 64.
One of the group of names coined in the 19th century from words for precious and semi-precious stones. It has a longer history as a Jewish name, representing an Anglicized form of Yiddish Perle ( see also Peninnah ).