There was no doubt, the Divine Blood originated from Saint George, an Angel who descended to the Mortal World in his original form.
Not a Reincarnated Angel who became human and lost their memory!
Saint George left behind his Divine Blood, the Oath Sword that slayed the dragon, and even preserved the Giant Dragon's vitality intact, hiding it beyond the Grey Space and placing it alongside his bloodline descendants.
This showed that Angels indeed had feelings, or at least Saint George took great care of his own descendants, leaving behind a magnificent treasury before he returned to Heaven.
The treasury was inexhaustible, more than enough for the Windsor Family to dominate the God-chosen Continent, cutting down anyone they found disagreeable.
"It's so touching."
While Dreyne was distracted, Wayne quickly crafted a glass vial with his thoughts and stored a few drops of Divine Blood inside.