^Ludwig von Pastor: History of the Popes vol. 30, London 1940, p. 32, says that she was born in 1594 and this date is followed by many other authors. However, Eleanor Herman, a recent biographer of Olimpia, indicates that she was born on 26 May 1591 and that she died at the age of 66. She adds that this date is confirmed by the baptismal registers in the episcopal archive of Viterbo. An account on the website of the Galleria Doria-Pamphilj also says that she was born in 1591.