PavlovmRussian, Bulgarian Means "son of Pavel". A famous bearer of this surname was the Russian scientist Ivan Pavlov (1849-1936), known for his discovery of the conditioned reflex.
PhilipsEnglish, Dutch Means "son of Philip". Famous bearers of this surname were Frederick Philips (1830-1900) and his son Gerard (1858-1942), the Dutch founders of the company Philips.
SimpsonEnglish Means "son of Sim", Sim being a medieval short form of Simon 1. This is the name of a fictional American family on the animated television series The Simpsons, starting 1989.
ValentiItalian Patronymic from the given name Valente, an Italian form of Valens. A famous bearer of the surname was Jack Valenti (1921-2007), advisor to American president Lyndon Johnson.