Rediscovered Velázquez portrait of one of the 17th century’s most powerful women comes to auction at Sotheby’s
A portrait by Spanish master Diego Velázquez (1599-1660) last recorded in 1724 is to be offered with a £2m-£3m estimate.
The subject is Olimpia Maidalchini Pamphilj – sister-in-law, reputed lover and puppet master of Pope…