Question: Who is Tiberius (Son Of Justinian Ii)'s paternal grandfather?
Sentence (from "Tiberius (son of Justinian II)"): After Tiberius' death, two different individuals impersonated him, with one, named Bashir, going on to be hosted by Hisham ibn Abd al-Malik, the Umayyad Caliph, before his lie was discovered and he was crucified.
Relevant evidence: No