music: what was the first american hit for the guess who?

Questions

In 1955 Margeaux ---------- (in Portland, Oregon), actress, daughter of Ernest, born.?

In 1960 Prince---------- , Second eldest son of HRH Queen Elizabeth II, born.?

In 1962 Hana---------- , tennis player, born.?

In 1966 Justine ---------- (in Rye, NY), actress (Family Ties), born.?

In 1977 President ---------- pardons Iva Toguri D'Aquino ("Tokyo Rose").?