Loretta is an Italian-English elaboration of Laura — possibly also from the Italian shrine of Our Lady of Loreto in the Marche region. Loretta Lynn (1932-2022) — American country singer-songwriter whose autobiographical 1970 song "Coal Miner's Daughter" defined country music's working-class poetics. First woman named Entertainer of the Year by the Country Music Association (1972); 24 #1 country hits. Married at 15 to a 21-year-old; had four children by age 19; wrote about birth control ("The Pill," 1975) and Vietnam ("Dear Uncle Sam," 1966) when both were taboo in country music. Loretta Young (1913-2000) — American actress; Oscar (1947).
Subject of Michael Apted's Coal Miner's Daughter (1980) starring Sissy Spacek (Oscar).
In Pythagorean numerology the letters of Loretta reduce to 1, The Leader. This is a traditional interpretive system, not a factual claim about the name.