Margarita Luti
According to Vasari, Raphael was a "very amorous man and affectionate towards the ladies". He is said to have painted portraits of his mistress and to have assigned the engraver il Baviera to serve as her page. When commissioned by Agostino Chigi to decorate the Villa Farnesina, he was unable to dedicate himself properly to his work due to his infatuation - until she was allowed to come to live at his side. Again according to Vasari, it was Raphael's immoderate indulgence in "amorous pleasures", one day taken to excess, that brought on the fever which led to the young artist's death in 1520. Although in the Pantheon he lies beside his fiancée Maria, daughter of his patron Bernardo Dovizi, Raphael had long delayed his marriage; on his deathbed he sent his mistress away "with the means to live an honest life".
Bertram Raphael
Raphael started at SRI International in 1964 as a consultant. After completing his Ph.D. at MIT, he was at the University of California, Berkeley for an academic year, and subsequently joined SRI full-time in April 1965. He was a long-time member of SRI's Artificial Intelligence Center, and was its director from 1970 to 1973. While at SRI, he helped invent the A* search algorithm and develop Shakey the robot, which was one of the first projects sponsored by DARPA; Raphael directed work on Shakey from 1970 to 1971. He also co-founded the Journal of Artificial Intelligence.