Eustace is the grandmother of Hawthorne. She can often be found in front of the Colonial Taphouse sharing a table with Malcom Latimer. Unlike other upper stand residents, Eustace is often polite and kind to the Sole Survivor. She also has about 29 house cats.
Although Eustace is Hawthorne's grandmother, the game files mistakenly list her as his parent. By 2287, Eustace is the only resident of Diamond City still alive who is old enough to have witnessed the Broken Mask incident.