William IV; Count of Toulouse; died 1094. He is depicted in a robe with full sleeves that resembles one worn by magistrates. On his head is a mortier; a type of hat reserved to royalty or nobility. From a manuscript. Handcoloured copperplate drawn and engraved by Leopold Massard from French Costumes from King Clovis to Our Days; Massard; Mifliez; Paris; 1834.