Marilyn Kroc Barg (Marilyn Janet Kroc) was the only child of McDonald's magnate Ray Kroc and lived a relatively private life away from the public spotlight; born in the mid-1920s, she married (Barg) and is recorded as having died in 1973. Her life is most often mentioned in the context of the Kroc family and Ray Kroc's biography rather than for a separate public career, and public records and memorial sites show slight discrepancies in her exact birth year (sources list 1924 or 1926).