Brando writes a last minute apology for being unable to attend an event due to the poisoning of his sister's baby. The letter appears to have been quickly penned in a large hand. "I will not be able to come tonight. My sister's baby was seriously poisoned [sic] yesterday night and I feel it necessary to go to Chicago tonight to be with her (none of my family will be there)...Please forgive me it was unavoidable...." He signs, "Marlon." With handwritten envelope. Brando had two older sisters, one is known to have had two sons. Actress Jocelyn Brando (1919-2005) and Don Hanmer had one son, author Gahan Hanmer. Brando and Hanmer divorced in 1950. She then married Eliot Asinof in 1950, divorced in 1955, and had her second son, Martin Asinof, born in 1952. Brando's letter does not indicate which son was poisoned. It is our guess that Brando wrote this no later than 1953. Brando's most famous films include, “A Streetcar Named Desire”, “On The Waterfront”, and “The Godfather.”.