“’Now the birth of Jesus Christ was in this wise. When his mother, Mary, was espoused to Joseph, before they came together she was found with child of the Holy Ghost.’ Yes, and the Greek demigod Perseus was born when the god Jupiter visited the virgin Danaë as a shower of gold and got her with child. The god Buddha was born through an opening in his mother’s flank. Catlicus the serpent-skirted caught a little ball of feathers from the sky and hid it in her bosom, and the Aztec god Huitzilopochtli was thus conceived. The virgin Nana took a pomegranate from the tree watered by the blood of the slain Agdestris, and laid it in her bosom, and gave birth to the god Attis. The virgin daughter of a Mongol king awoke one night and found herself bathed in a great light, which caused her to give birth to Genghis Khan. Krishna was born of the virgin Devaka. Horus was born of the virgin Iris. Mercury was born of the virgin Maia. Romulus was born of the virgin Rhea Sylvia.”
The above is from Christopher Hitchens book, god is not Great, How Religion Poisons Everything.
Given his status as journalist and author, I did not feel the need to vet the above information. I am sure it has been done many times before.