Catrin ferch Owain Glyndŵr

Catrin ferch Owain Glyndŵr (died 1413) was one of the daughters (probably the eldest) of Margaret Hanmer and Owain Glyndŵr.

Little is known about any of the children of Owain Glyndŵr but the Welsh bard Lewis Glyn Cothi, although writing some years later, described Gwenllian, a (probably illegitimate) sister of Catrin, as "Gwenllian of the golden locks" and "Gwenllian of the house of drifted snow".

Catrin ferch Owain Glyndŵr married Edmund Mortimer, an unransomed hostage who had made an alliance with her father in 1402. Her husband would die during the siege of Harlech Castle in 1409.

Catrin was subsequently captured alongside her three daughters. They, as well as her mother and one of her sisters, were taken to the Tower of London. The deaths of Catrin and her daughters are recorded, and their burial at St Swithin's Church in London.

The memorial to Catrin in St Swithin's Church Garden, London.

A memorial to Catrin stands in St Swithin's Church Garden, where the church formerly stood; the statue was designed by Nic Stradlyn-John and sculpted by Richard Renshaw, and was unveiled in 2001 by Siân Phillips.

Her mother's fate is not known; it is known only that Margaret Hanmer outlived Catrin. In 2003 an exhibition was held at the National Library of Wales to celebrate Catrin's legacy, and a short poem was composed in her memory by Menna Elfyn. A play, Catrin Glyndwr by Heledd Bianchi, was premièred in 2004.