I have four theme entries that are the last names of famous people who share the same occupation. The clues for all the entries do not refer to the person but to something other than the person. My problem is that one of the famous names in the four themers needs to be pluralized to fit. For that entry can I use something like: Clue: Luminous ice floes? (or theme-related answer and family); Ans.: Goldbergs. The famous name is "Goldberg," though. Would having the actual surnames for 3 themers and the pluralized form of the surname, with the phrase in parentheses attached to the clue for 1 themer. be a "killer"?