Cazador dormido by the 17th century artist, Pedro Peralta.
Album/Alamy
Many clues are revealed about people’s sleep thanks to Vicar Rhys Prichard’s poetry from the 1600s.
Annie Hughes Griffiths holds the Welsh women’s petition for peace at the White House on February 21 1924, alongside (l-r) Gladys Thomas, Mary Ellis and Elined Prys.
WCIA/Temple of Peace Archives
A tour of the US was the culmination of an extraordinary peace campaign that gathered 390,296 signatures from women all over Wales. So why does it not appear in any history books?
A group of witches offering wax effigies to the Devil in a 17th-century woodcut.
Pictorial Press Ltd/Alamy
Only five witches were executed in Wales, while thousands were sentenced to death in Scotland and England.
Thomas Holt/Shutterstock
Being unable to agree on a united national memorial shows just how disunited Wales had been.
Ellis Humphrey Evans, known by his bardic name Hedd Wyn, was killed on the first day of the battle of Passchendaele.
Chronicle/Alamy
Bard Hedd Wyn was killed in action in France in 1917.
The Mari Lwyd makes a welcome appearance in Chepstow.
Jessica Gwynne/Alamy
The Mari Lwyd and the plygain are two prominent Welsh traditions celebrated over Christmas and the new year.
Men and boys, many dressed as women, attacking a turnpike gate in protest at charges at tollgates on public roads in west Wales. The Illustrated London News, 1843.
World History Archive/Alamy
The Rebecca riots saw Welsh farmers disguised as women destroy tollgates as a way of challenging what they believed was an oppressive taxation system.
Nos Galan Gaeaf on October 31 is followed by Calan Gaeaf on November 1 in Wales.
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Nos Galan Gaeaf on October 31 in Wales is steeped in folklore and tradition.
The Royal Charter was shipwrecked at Porth Alerth near Moelfre on Anglesey.
John Oxley Library, State Library of Queensland
More than 800 lives were lost in the Royal Charter storm but it also led to improvements in weather forecasting.
The Welsh National Mining Memorial was unveiled in Senghenydd in 2013.
FreespiritEnvironment/Alamy
Four hundred and forty men and boys were killed in the Senghenydd colliery disaster, with the youngest victims aged just 14 years old.
David Olusoga is calling on schools to teach more about the histories of the other nations of the UK in his new BBC show, Union.
BBC/Wall to Wall Media
If history is to be of any use to those who study it, it ought to help them understand the nature of the country and society they live in.
A halfpenny token issued by the Parys Mining Company of Anglesey in 1788. The hooded druid design was used for many years and was the first of hundreds of token designs.
BrandonBigheart/Wikimedia
A Welsh mining company was the first to issue tokens to workers as an alternative form of payment.
Cranogwen oedd enw barddol Sarah Jane Rees.
Merchant logo Llyfrgell Genedlaethol Cymru
Roedd Cranogwen yn arloeswraig oherwydd iddi gyflawni gymaint yn ystod oes Fictoria, sef cyfnod lle nad oedd gan ferched lawer o hawliau.
Sarah Jane Rees was also known as Cranogwen.
National Library of Wales
Cranogwen was a trailblazer who challenged expectations of women during the Victorian era.
The Brecon Beacons National Park is now officially only known by its native Welsh name.
Mel Manser Photography/Shutterstock
The mountain range in south Wales is now officially only known by its native Welsh-language name
Around 400 local children have been involved in this archaeological project in Cardiff, Wales.
Vivian Paul Thomas
Since 2011, professional and amateur archaeologists in Cardiff have been unearthing prehistoric artefacts. But last summer, they began to discover something even more extraordinary.
Hundreds of thousands of hours of broadcasting history are available for the first time.
National Library of Wales
The Wales Broadcast Archive in Aberystwyth brings together the archives of the BBC, ITV and S4C under one roof.
A scale model of a statue dedicated to Lady Rhondda has been revealed by the sculptor, Jane Robbins.
AV Morgan/Wikimedia
Lady Rhondda was a suffragette, a business leader and an editor. A statue of her is expected to be revealed in Newport, south Wales, next year.
Gareth Jones was a reporter from Barry in south Wales.
The Gareth Vaughan Jones Estate
Gareth Jones reported on Moscow’s genocide against the Ukrainian people in the 1930s. His story holds lessons and an example for those reporting on the latest conflict.
A stone statue of Dewi Sant inside St Davids Cathedral in Pembrokeshire.
Peter Barritt/Alamy
Much of what we know about the life of the sixth century monk, St David, comes from medieval texts written several centuries later.