Y Lolfa has produced its own Glyndwr stamps

Catrin was buried with her children in St Swithin's Church in the City of London following their death in 1413.

The design for the sculpture was created by Pontypridd-based Nic Stradlyn-John, and sculpted by Cwmdu-based Richard Renshaw.

The statue represents the suffering of women and children in war and is also intended to celebrate the enduring spirit of Wales.

Calls were made last autumn on the 600th anniversary of Owain Glyndwr for a Glyndwr Day bank holiday on 16 September.

Glyndwr, who was proclaimed Prince of Wales on September 16, 1400 after rebelling against English rule, is a key figure in Welsh history and was the last Welsh-born Prince of Wales.

Owain Glyndwr: His uprising was a turning point

Campaign group Embassy wants the anniversary of the revolt in Wales against Henry IV to become a national day.

Memorial celebrations stretched from Ruthin - where the uprising against the English began in 1400 - to Machynlleth, where Glyndwr held the first Welsh parliament.

Last autumn in Machynlleth, a special sculpture to Glyndwr by artist Ieuan Rees was unveiled.

The Welsh Tourist Board urged people to fly the Welsh flag from their homes.