The armorial combines historical (late medieval) with fictional coats of arms to construct the notion of an "Illyrian Empire".
The personal purpose pursued by Petar Ohmučević was that of confirming his own "Illyrian" nobility after he rose to the rank of admiral in the Spanish navy.
Ohmučević was granted the status of nobleman in 1594, which is taken as the terminus ante quem of the armorial.
Ohmučević's armorial can thus be considered a personal project in origin, or even a fraud, as he invented genealogy in order to qualify for the coveted title, but its influence turned out to be immense, becoming, as it did, the foundation of South Slavic or "Illyrist" heraldry in general.
An important source for Ohmučević's heraldic inventions was the Wappenbüchlein by Virgil Solis (1555), which itself contains fictional arms of "foreign kingdoms".