I think this is fascinating as it shows the continuity of one type of anomalous or spiritual experience from at least the early Mediaeval period up to the present day. The following interview is from TV show This Morning and aired on 7th December 2017.
And the following quote is from Geoffrey of Monmouth's 12th century book the History of the Kings of Britain:
“In the books of our wise men and in many histories have I found that many men have been born into the world on this wise. For, as Apuleius in writing as touching the god of Socrates doth make report, certain spirits there be betwixt the moon and the earth, the which we do call incubus daemons. These have a nature that doth partake both of men and angels, and whensoever they will they do take upon them the shape of men, and do hold converse with mortal women. Haply one of these hath appeared unto this lady, and is the father of the youth.”
It should be noted that the understanding of daemons here is not the same as the Christian conception of demons that are subject to the Devil. Daemons were not considered to be servants of evil but rather spiritual beings that could act as guides or mediators between the gods and mortals.