Many place names were originally taken from given names, including America, the Philippines, Georgia, Virginia, the many places named Victoria (after queen Victoria), Constantinople (after Constantine), the many places named Alexandria (most after Alexander the Great), Adelaide, Saint Paul, Jamestown, Charleston, San Juan, Santiago, Santa Ana, San Francisco and many more.
Looking in the other direction, given names that are derived from place names include Tiberius, Lydia, Sebastian, Luke, Rhonda, Clyde, Sharon and Bethany. There are also many modern names taken directly from place names, such as Africa, China, France, India, Ireland, Erin, Cambria, London, Paris (when not the name of a Trojan warrior), Roma, Venetia, Verona and Philadelphia.