Actually a decent purchasable print of a painting. Specifically a 16th century portrait of the semi-obscure/semi-notorious Spanish noblewoman named Ana de Mendoza de la Cerda, princesa de Eboli ( 1540-1592 ). La Eboli was the scion of a very powerful Spanish noble house ( the Mendozas ) and the youngish widow of Ruy Gomez de Silva ( d. 1573 ), prince of Eboli - in life one of the two most important faction leaders in the Spanish court and 26 years the senior of his wife who he married when she was thirteen. She ended being one of the central figures in a nasty political scandal in the court of Philip II of Spain ( and sundry other possesions ) during the very sensitive period surrounding the Portuguese succession and spent the last ten years of her life imprisoned. Olivia de Havilland ( Maid Marian in the Errol Flynn version of The Adventures of Robin Hood ) played her in the 1955 film That Lady :).
The actual painting I’m looking for can be seen ( shrunken, dark and blurry ) on the cover of this book at Amazon:
It’s a nice little detailed portrait of the attractive young princess dressed to the nines and holding a flower, all while sporting her distinctive piratey eye-patch.What little I know about the portrait is that it was by anonymous ( great help 
) and can be found in the Collection of the Marquess de Santillano. Now I have no idea if that is a named collection in famous museum like the Prado in Madrid or an actual privately held collection.
So far the internet is turning up nothing much ( though I may have missed a trick or two ) and if I can’t find anything by my next day off on Wednesday, I’ll schlep on down to a print shop and start digging through catalogues. But hopefully an art-savvy Doper can point me in the right direction before then :).
- Tamerlane