Rubuta ci gaba ga wannan sakin layi - Ita 'yar Thomas Randolph ce, Earl na Moray, dan uwansa kuma abokin aikin Robert the Bruce, da matar Moray, Isabel Stewart, ita kanta 'yar John Stewart ta Bonkyll. Agnes ta zama sananne ne saboda jaruntakarta ta kare Dunbar Castle a Gabashin Lothian daga wani kewaye na Ingila wanda William Montagu, 1st Earl na Salisbury ya jagoranci, wanda ya fara a ranar 13 ga Janairu 1338 kuma ya ƙare a ranar 10 ga Yuni a wannan shekarar a lokacin Yaƙin na biyu na Scottish Independence
daga 1331 zuwa 1341.