Things that Wikipedia considers worth mentioning with regard to 1st September include:
1532 – Lady Anne Boleyn is made Marchioness of Pembroke by her fiancé, King Henry VIII of England.
1836 – Narcissa Whitman, one of the first English-speaking white women to settle west of the Rocky Mountains, arrives at Walla Walla, Washington.
1878 – Emma Nutt becomes the world's first female telephone operator when she was recruited by Alexander Graham Bell to the Boston Telephone Dispatch Company.
1914 – The last passenger pigeon, a female named Martha, dies in captivity in the Cincinnati Zoo.
1972 – In Reykjavík, Iceland, American Bobby Fischer beats Russian Boris Spassky and becomes the world chess champion.
1286 – Elisabeth Richeza of Poland, Queen of Poland (d. 1335)
1653 – Johann Pachelbel, German composer (d. 1706)
1896 – A.C. Bhaktivedanta Swami Prabhupada, Founder-Acarya of ISKCON, the Hare Krishna Movement (d. 1977)
1906 – Eleanor Burford Hibbert (Jean Plaidy, Victoria Holt, Philippa Carr...), English writer (d. 1993)
1922 – Yvonne De Carlo, Canadian-born actress (d. 2007)
1933 – Ann Richards, American politician (d. 2006)
1935 – Seiji Ozawa, Japanese conductor
1939 – Lily Tomlin, American actress and comedian
1950 – Dr. Phil McGraw, American talk show host
1955 – Bruce Foxton, English bassist (The Jam)
1957 – Gloria Estefan, Cuban/American singer
1962 – Ruud Gullit, Dutch footballer
1970 – Padma Lakshmi, Indian actress
1067 – Baldwin V of Flanders
1581 – Guru Ram Das, fourth Sikh Guru (b. 1534)
1838 – William Clark, American explorer, part of the Lewis and Clark Expedition (b. 1770)
1967 – Siegfried Sassoon, English poet (b. 1886)