Allan, thank you for sending us to this site. It's fascinating work. I especially liked his "Dutchess" painting and how he has painted her as she is about to get up from her chair. (In fact, I think I'll steal this idea someday.)
Thanks, Allan:
There was only one Velasquez. After about 200 years of his death, a group of artists, Repin, Sargent and others carried his torch, developed further.