[c mediumvioletred] (as used in expressions)
Rama IV
Adrian IV
Antiochus IV Epiphanes
Baldwin IV
Casimir IV
Charles IV
Christian IV
Thomas Cruise Mapother IV
Edward IV
Frederick William IV
George IV
Gustav IV Adolf
Haakon IV Haakonsson
Henry IV
Innocent IV
Ivan IV
James IV
Kamehameha IV
Joseph Francis Keaton IV
Louis IV
Ludwig IV
Otto IV
Peter IV
Philip IV
Raymond IV
Romanus IV Diogenes
Sancho IV
Sixtus IV
Stefan Uros IV
Valdemar IV Atterdag
William IV
{{link=William Jefferson Blythe IV">William Jefferson Blythe IV