Richard de Clare, 6th Earl of Gloucester

Richard de Clare, 5th Earl of Hertford, 6th Earl of Gloucester, 2nd Lord of Glamorgan, 8th Lord of Clare was the son of Gilbert de Clare, 4th Earl of Hertford, and Isabel Marshal. He was also a powerful Marcher Lord in Wales and inherited the Lordship of Glamorgan upon the death of his father. He played a prominent role in the constitutional crisis of 1258–1263.

4 August 1222

Born on the same birth day (4 August): Alan Mulally • Andy Hallett • Benjamin Lauth • Chuck C. Lopez • Dallas Green (baseball) • Daniel Dae Kim • Don S. Davis • Giorgos Zographos • Glenn Cunningham (athlete) • Granville Leveson-Gower, 1st Marquess of Stafford • Hans-Walter Eigenbrodt • Hiroyuki Usui • John Henry Twachtman • Kelley O'Hara • Kily González • Master C. V. V. • Sandeep Naik • Stefan Brogren • Trevor Woodman • Vilhelm Dahlerup • William Rowan Hamilton • Witold Gombrowicz