My grandfather's encounter with Spring-heeled Jack - family story I've never shared

My grandfather passed away last year and I've been going through his journals. Found an entry dated March 1962 where he describes witnessing something he believed was Spring-heeled Jack. I know the legend is mostly from the 1800s, but he was adamant about what he saw, and he wasn't prone to exaggeration.

According to his account, he was walking home through East London (Whitechapel area, funnily enough) late at night after his shift at the docks. A figure jumped from a roof to street level - a distance of easily 20+ feet - in one bound. He described it as having an impossibly elongated gait, like each step covered ground a normal human couldn't achieve. It moved away from him rapidly and disappeared into an alley.

He noted: 'It moved like the physics of it was wrong. Not human legs.' He was absolutely certain it wasn't a person on stilts or anything mundane. The description matches some of the Victorian accounts of Spring-heeled Jack - the unusual gait, the impossible jumping height, the way it moved.

I'm posting this partly to ask if anyone else has family stories about Spring-heeled Jack sightings beyond the 1800s? And partly because I think my grandfather saw something genuinely strange and I'd like to know I'm not honouring the memory of a madman by believing him.

Spring-heeled Jack as a phenomenon pretty much stops being reported after the early 1900s. Your grandfather's 1962 encounter would be a massive outlier. That said, Whitechapel has genuinely weird history and people do sometimes have encounters they can't explain. Worth investigating further just on the principle of respecting his experience.

'It moved like the physics of it was wrong.'

This phrasing is interesting. It's the kind of thing people say when they've witnessed something their brain couldn't quite process. Could be misidentification, could be something genuinely unusual. The fact it's written in a journal suggests he was trying to make sense of it himself rather than embellishing for an audience.

There are a few cryptozoologists who've documented Spring-heeled Jack sightings beyond the Victorian era. Most are 20th century and clustered in London. Your grandfather's account fits the pattern - humanoid, impossible movement, urban environment, witnessed by a single credible observer.

Could it have been someone with stilts or unusual training? Professional high-jumpers can achieve impressive heights. The 'physics wrong' description might just be the shock of seeing something unexpected combined with the lighting conditions and distance. Memory also plays tricks - things seem more impossible in retrospect.

Your grandfather sounds like he tried to be rational about it - he wrote it down, described what he saw, noted his impressions. That's more credible than wild claims. Whether it was Spring-heeled Jack or something else entirely, he experienced something that genuinely unsettled him. That's worth respecting even if you can't explain it.

Have you tried contacting paranormal research organisations? The fact that you've got a dated account with specific location details is genuinely valuable data. They might have other Spring-heeled Jack reports you could cross-reference, or historical context about that area in 1962.