There's a german cover version: Ein Mädchen namens Gerd (A girl called Gerd).
in 1971 Little Murders (based on the 1966 play) was released (includes a great speech by Donald Southerland) in which the father is named Carol Newquist and constantly says it's a man's name.
Gerd is a women's name in Norway, and I would think in other Nordic countries, since it's after a giant-goddess with the same name (the wife of Frey). So there would have been a lot of girls named Gerd around at the time.
Of famous people, I can only remember the actor Dana Ashbrook, who played Bobby Briggs in Twin Peaks.
in 1971 Little Murders (based on the 1966 play) was released (includes a great speech by Donald Southerland) in which the father is named Carol Newquist and constantly says it's a man's name.