Vnislav's name is a typical
Slavonic name ending in -slav (such as
Wenceslas,
Vladislav,
Vítězslav etc.) but there is confusion about the first part.
Záviš Kalandra thought the names of the seven princes were cryptical names of ancient Slavonic days of the week - Vnislav being the fourth - Wednesday, in Latin
dies Mercurii whereas Vnislav could refer to a Slavonic god of profit. Another theory suggests the names of the Přemysl ancestors arose from a mistaken interpretation by Cosmas. According to postulation by
Vladimír Karbusický, Cosmas likely contrived them when trying to read a lost
Latin transcription of an old-Slavonic message. When the ancestral names are combined and reassessed, they can roughly cohere an assumed text: "
Krok‘ kazi tetha lubossa premisl nezamisl mna ta voj‘n ni zla kr‘z mis neklan gosti vit..." In modern English, this may translate to: "
Halt your steps, Tetha, and rather think, I do not intend war or evil upon you, we do not bow to the cross, we welcome guests..." The alleged message is speculated to be from the Czech princes to the
Franks, perhaps in relation to the
Battle of Zásek c. 849 described in the
Annales Fuldenses. == Seven mythical princes after Přemysl ==