It occurred to me that William Longespee and John Harris share yet another weird coincidence.
Not only were both defeated in battle slightly less than 701 years apart, but if the date of 1176 for Count William’s birth is correct then they were also born approximately 701 years apart.
This strengthens, but does not prove, my thought that the two had been parallel lives somehow connected to each other or perhaps the dichotomy between them was a temporal illusion.
Unfortunately, an exact date or location for Count William’s birth cannot be found. I suspect that the sources citing his birth place as Woodstock Manor are basing their assumption on the disproven theory that Rosamund de Clifford was his mother (his mother was actually Ida de Tosny based on documents from the period).