The Jersey Devil's Birthplace is generally regarded to be in Leeds Point, in what is now Atlantic County. Differing legends put the birthdate at 1735, 1778, 1850, 1855, and 1857. The remains of the old Shourds house, reputed to be the birthplace in Leeds Point, can be found in the woods, locals say

 

Jack E. Boucher, author of Absagami Yesteryear, has a theory in which he believes the devil was a deformed child. He thinks Mrs. Leeds had a disfigured child and kept it locked away in the house. She grew sick and couldn't feed the child anymore. It escaped out of hunger and raided local farms for food. This doesn't take into account the incredible life span of the devil. The child would have been 174 years old in 1909. It also doesn't account for the sightings of ther devil flying.

Only a small amount of the sightings and footprints could be hoaxes. The Jersey Devil has been seen by reliable people such as police, government officials, postmasters, businessman, and other people whose "integrity is beyond question." As for the hoof prints, even if some were hoaxes, There is still no way to explain most of the tracks, especially the ones on roof tops and tracks that ended abruptly as if the creature took wing.

The last theory is the most controversial one. Many people believe that the Jersey Devil could be the very essence of evil, embodied. It is said that the devil is an "uncanny harbinger of war". and appears before any great conflict. The jersey devil was sighted before the start of the Civil War. It was also seen right before the Spanish American War and WW I. In 1939, before the start of WW II, Mount Holly citizens were awakened by the noise of hooves on their roof tops. The Devil was seen on December 7, 1941, right before Pearl Harbor was bombed. He was also seen right before the vietnam War.

The Jersey Devil's habit of being a forerunner to wars could be because of his possible demonic origins. In 1730, Ben Franklin reported a story about a witchcraft trial near Mt Holly, NJ. One of the origin legends say that Mother Leeds was a witch. The devil's birth could have been a result of a witches curse.