Do You Capitalize King?
AP Style rules hold that you should capitalize “king” only when used before the name of royalty. For example,
- King George VI continued his speech.
Continue in subsequent references that use the king’s given name. For example,
- King George
-not-
- George
Lowercase “king” when it stands alone.
Capitalize in plural uses before names. For example,
- Kings George and Edward
Lowercase in phrases such as “strikeout king Nolan Ryan.”
See also AP Style Nobility and AP Style Titles.