Blackbeard the pirate and his catholic leanings

Amazing but true , it seems that the symbol of Blackbeard .. the Skull and Cross Bones is a Christian Symbol!!!!
It is said that a man was desperately in love with a girl and she died before they could marry. And our man in desperation dug up the girls grave and consumnated his manly act. and in those days it was a common thing to dig up old graves and bury new ones .. when this grave was dug up , they found a small skull between the girls legs.
Thus this symbol of a skull between two bones is considered as an Omen and was used by Blackbeard and his types...