Sleep habit in old days

The forgotten medieval habit of ‘two sleeps’

For millennia, people slept in two shifts – once in the evening, and once in the morning. But why? And how did the habit disappear?

It was around 23:00 on 13 April 1699, in a small village in the north of England. Nine-year-old Jane Rowth blinked her eyes open and squinted out into the moody evening shadows. She and her mother had just awoken from a short sleep.

Mrs Rowth got up and went over to the fireside of their modest home, where she began smoking a pipe. Just then, two men appeared by the window. They called out and instructed her to get ready to go with them.

As Jane later explained to a courtroom, her mother had evidently been expecting the visitors. She went with them freely – but first whispered to her daughter to “lye still, and she would come again in the morning”. Perhaps Mrs Rowth had some nocturnal task to complete. Or maybe she was in trouble, and knew that leaving the house was a risk. 

Either way, Jane’s mother didn’t get to keep her promise – she never returned home. That night, Mrs Rowth was brutally murdered, and her body was discovered in the following days. The crime was never solved.

Nearly 300 years later, in the early 1990s, the historian Roger Ekirch walked through the arched entranceway to the Public Record Office in London – an imposing gothic building that housed the UK’s National Archives from 1838 until 2003. There, among the endless rows of ancient vellum papers and manuscripts, he found Jane’s testimony. And something about it struck him as odd. 

Originally, Ekirch had been researching a book about the history of night-time, and at the time he had been looking through records that spanned the era between the early Middle Ages and the Industrial Revolution. He was dreading writing the chapter on sleep, thinking that it was not only a universal necessity – but a biological constant. He was sceptical that he’d find anything new.  

So far, he had found court depositions particularly illuminating. “They’re a wonderful source for social historians,” says Ekirch, a professor at Virginia Tech, US. “They comment upon activity that’s oftentimes unrelated to the crime itself.”

But as he read through Jane’s criminal deposition, two words seemed to carry an echo of a particularly tantalising detail of life in the 17th Century, which he had never encountered before – “first sleep”.

“I can cite the original document almost verbatim,” says Ekirch, whose exhilaration at his discovery is palpable even decades later.

n her testimony, Jane describes how just before the men arrived at their home, she and her mother had arisen from their first sleep of the evening. There was no further explanation – the interrupted sleep was just stated matter-of-factly, as if it were entirely unremarkable. “She referred to it as though it was utterly normal,” says Ekirch.

A first sleep implies a second sleep – a night divided into two halves. Was this just a familial quirk, or something more?

An omnipresence

Over the coming months, Ekirch scoured the archives and found many more references to this mysterious phenomenon of double sleeping, or “biphasic sleep” as he later called it.

Some were fairly banal, such as the mention by the weaver Jon Cokburne, who simply dropped it into his testimony incidentally. But others were darker, such as that of Luke Atkinson of the East Riding of Yorkshire. He managed to squeeze in an early morning murder between his sleeps one night – and according to his wife, often used the time to frequent other people’s houses for sinister deeds.

When Ekirch expanded his search to include online databases of other written records, it soon became clear the phenomenon was more widespread and normalised than he had ever imagined.

For a start, first sleeps are mentioned in one of the most famous works of medieval literature, Geoffrey Chaucer’s The Canterbury Tales (written between 1387 and 1400), which is presented as a storytelling contest between a group of pilgrims. They’re also included in the poet William Baldwin’s Beware the Cat (1561) – a satirical book considered by some to be the first ever novel, which centres around a man who learns to understand the language of a group of terrifying supernatural cats, one of whom, Mouse-slayer, is on trial for promiscuity.

But that’s just the beginning. Ekirch found casual references to the system of twice-sleeping in every conceivable form, with hundreds in letters, diaries, medical textbooks, philosophical writings, newspaper articles and plays.

The practice even made it into ballads, such as “Old Robin of Portingale. “…And at the wakening of your first sleepe, You shall have a hot drink made, And at the wakening of your next sleepe, Your sorrows will have a slake…”

Biphasic sleep was not unique to England, either – it was widely practised throughout the preindustrial world. In France, the initial sleep was the “premier somme“; in Italy, it was “primo sonno“. In fact, Eckirch found evidence of the habit in locations as distant as Africa, South and Southeast Asia, Australia, South America and the Middle East.

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