Usually they are, although Harry is increasingly given as a name in its own right. This is mainly due, first to the popularity of British Prince Harry (christened Henry) and in recent years to the massive popularity of JK Rowling's Harry Potter books. Harry can also be a short form of Harold, but it is more commonly associated with Henry.
Henry itself has become popular again in recent years. It was an Old French name, based on the Germanic words haim, "home" and ric, "ruler." (in modern German the name is Heinrich; in modern French it is Henri.) Like many names now common in English-speaking countries, it was first brought to Britain by the Normans in 1066. It was the name of the fourth son of William the Conqueror, who became Henry I when his elder brother died. After that the name became associated with kings, culminating in the notorious Henry VIII.
Feminine forms include Harriet, Henrietta and Henriette. A pet form for Henry used to be Hal, though this is now rare.
Henry itself has become popular again in recent years. It was an Old French name, based on the Germanic words haim, "home" and ric, "ruler." (in modern German the name is Heinrich; in modern French it is Henri.) Like many names now common in English-speaking countries, it was first brought to Britain by the Normans in 1066. It was the name of the fourth son of William the Conqueror, who became Henry I when his elder brother died. After that the name became associated with kings, culminating in the notorious Henry VIII.
Feminine forms include Harriet, Henrietta and Henriette. A pet form for Henry used to be Hal, though this is now rare.