Theodosius
... that the Persian ruler Khosrau II used a man who he claimed to be Theodosius, the eldest son of the murdered Byzantine emperor Maurice, as a justification for launching a war against Byzantium?
... that the <a class="mw-redirect" href="./Sassanid_Empire" id="mwCDE" rel="mw:WikiLink" title="Sassanid Empire">Persian</a> ruler <a class="mw-redirect" href="./Khosrau_II" id="mwCDI" rel="mw:WikiLink" title="Khosrau II">Khosrau II</a> used a man who he claimed to be <b id="mwCDM"><a href="./Theodosius_(son_of_Maurice)" id="mwCDQ" rel="mw:WikiLink" title="Theodosius (son of Maurice)">Theodosius</a></b>, the eldest son of the murdered <a href="./List_of_Byzantine_emperors" id="mwCDU" rel="mw:WikiLink" title="List of Byzantine emperors">Byzantine emperor</a> <a href="./Maurice_(emperor)" id="mwCDY" rel="mw:WikiLink" title="Maurice (emperor)">Maurice</a>, as a justification for launching a <a class="mw-redirect" href="./Byzantine–Sassanid_War_of_602–628" id="mwCDc" rel="mw:WikiLink" title="Byzantine–Sassanid War of 602–628">war</a> against Byzantium?