Team Logo. The Frederick Keys are a team in the Carolina League. They are the High-A affiliate of the Baltimore Orioles. They get their name from Francis Scott Key, the man who wrote the "Star Spangled Banner". Retrieved from "https://prosportsteams.fandom.com/wiki/Frederick_Keys?oldid=7236" Categories: Carolina League teams Teams in Maryland Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.