What was the name of count Draculas first bride?

In the novel Dracula, the vampire Count has three vampire brides. They are never named (in the novel), neither is an order given to their chronology of 'marriage'. However the most beautiful one has her coffin secreted in the most inaccessible of locations within the Count's castle and Dr. VanHelsing wasted the remainder of the day (apparently the great part of it) searching for her.

In the Alternate History novel 'Anno Dracula', it is mentioned that one of the 'Brides' is Barbra of Celje: Holy Roman Emperess instrumental in the creation of the Order of the Dragon.

Other variations are given in the Wikipedia article 'Brides of Dracula'.

Another wife of Dracula, however, is Elizabeta, (According to the 1922 Movie)