But later, his support of the Ghibelline antipope Victor IV caused additional conflict with the Vatican, which supported an organization he fought directly, the Lombard League.  
His uncle died before finishing an account of his reign, and the man who completed its last two books copied verbatim the physical description of a much earlier monarch.  His relationship with the church was initially strong, as he swore to defend Pope Eugene III in the Treaty of Constance.  But later, his support of the Ghibelline antipope Victor IV caused additional conflict with the Vatican, which supported an organization he fought directly, the Lombard League.  FTP, name this Hohenstaufen Holy Roman Emperor whose death came while crossing the Saleph River on the way back from the Third Crusade and had a notably red beard.
His uncle died before finishing an account of his reign, and the man who completed its last two books copied verbatim the physical description of a much earlier monarch.  
{Frederick}{ I} {Barbarossa} [accept either underlined part; that is, accept {Frederick I}, {Frederick I Barbarossa}, {Frederick Barbarossa}, or just {Barbarossa}, prompt on “Frederick”]