When Frank meets Vlad Demonic for the first time, he says that his children were killed along with their mother when Austria took Serbia, a statement backed up by Sasha Barbicon.

Unseen Characters
Annie Morrow | Charles | Duke of Norwick | Enid | Emily Troutt | George Quincy Clifford | Isidor Straus | Landlady | Matthew Morrow | Tom | T.S.D. Hipple | Vlad Demonic's children | Vlad Demonic's wife | W.E. Carter