Wales’s history books are packed full of extraordinary heroes — from NHS founder, Aneurin Bevan, to 14 th-century leader, Owain Glyndŵr.
Mae llyfrau hanes Cymru’n lawn dop o arwyr eithriadol — o sylfaenydd y GIG, Aneurin Bevan i’r arweinydd i’r 14eg-ganrif Owain Glyndŵr.