First you say that Dracula was revived prematurely by Shaft, and now you say that he revived once his own? I'm pretty sure you are wrong in both cases since you never had anything to back this up. Dracula never resurrected on his own by the way. The Japanese manual states that his followers revived. Besides, that whole Dracula getting back himself thing was just a legend and the game made this pretty clear in the game itself. You can once again find it in the manual.
After reading the manual I find you are correct in saying that he did in fact have people bring him back from the dead in super castlevania.
But Rondo is clearly wrong in its math
Prologue
"In the days of old, the people thrived on peace and prosperity. Indeed, fears of unrest were not among their thoughts...
Everpresent, however, is the underside of tranquility, evil. Evil, which spurns prosperity and disdains peace.
Gather they did, those who wished to summon the powers of darkness and cleanse the decadence of the world. And, with smiling countenance, they anxiously awaited the coming of their era.
A hundred years had past, and he was resurrected. Able to become bat, wolf, or mist at will, he lived in the night. He drank the blood of young maidens and lived an eternal life. The lord of Demon Castle, the god of evil, Count Dracula was reborn."
Actually only 94 years had passed.