Dyma sgwrs gyda chadeirydd y Gymdeithas Hanes, Joan Thomas a'r hanesydd Catrin Stevens am y Ddeiseb Heddwch, 1923, pan gasglwyd bron i 400,000 o lofnodion gan ferched Cymru.
Derbyniwch y newyddion, fideos ac adnoddau diweddaraf.
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