mundi puts out something from uncle wiki
from Wikipedia: https://en.wikipedia.org/wiki/Sasanian_conquest_of_Jerusalem
In 628, following the deposition of Khosrau II, Kavadh II made peace with Heraclius giving Palaestina Prima and the True Cross back to the Byzantines. The conquered city and the Holy Cross would remain in Sasanian hands until they were returned by Shahrbaraz. Shahrbaraz and his son Niketas, who converted to Christianity, would control Jerusalem until at least the late summer/early autumn of 629. On March 21 630 Heraclius marched in triumph into Jerusalem with the True Cross.
mundi wiki is just for startup...and one must be careful to take that as true history from what people have written at wiki specially when it comes to history unlike science subjects
let us not take what these guys wrote
Walter Emil Kaegi (2003). Heraclius, Emperor of Byzantium. Cambridge University Press. pp. 185, 189. ISBN 9780521814591. Retrieved 12 March 2014.
Michael H. Dodgeon, Samuel N. C. Lieu, eds. (2002). The Roman Eastern Frontier and the Persian Wars Ad 363-628, Part 2. Taylor & Francis. pp. 227–228.
on their face value.. in fact names like Shahrbaraz ....Niketas
..... itself is questionable... they are NOT original names.. they are titles., like "MUHAMMAD" but this
Byzantine and Sassanid empires and their vassals at the beginning of 7th century CE. Based on the http://commons.wikimedia.org/wiki/File:East-Hem_600ad.jpg
geographical picture from your wiki link is very useful one