Rita of Cascia, OSA, was an Italian widow and Augustinian nun. After Rita's husband died, she joined an Augustinian community of religious sisters, where she was known both for practicing mortification of the flesh and for the efficacy of her prayers. Various miracles are attributed to her intercession, and she is often portrayed with a bleeding wound on her forehead, which is understood to indicate a partial stigmata.

Yves Klein was a French artist and an important figure in post-war European art. He was a leading member of the French artistic movement of Nouveau réalisme founded in 1960 by art critic Pierre Restany. Klein was a pioneer in the development of performance art, and is seen as an inspiration to and as a forerunner of minimal art, as well as pop art. He is known for the development and use of International Klein Blue.