[2] Inglis-Jones took up writing as a child, joining a literary group called The Scratch Society when she was 12 or 13.
Her often reprinted Peacocks in Paradise (1950, republished 1990) tells of Hafod, a historic Welsh mansion, and its first owner Thomas Johnes (1748–1815).
[2] Her five other novels were Crumbling Pageant (1932, republished 2015), Pay Thy Pleasure (1939), The Loving Heart (1942), Lightly He Journeyed (1946), and Aunt Albinia (1948).
[4] Her works on Welsh history included The Story of Wales (1955), describing houses demolished since 1900.
[2] Jane Bowden, reviewing a revival of Crumbling Pageant, praised Inglis-Jones's "undeniable talent for story-telling, characterisation and lifelong passion for Wales", qualifying her as a "great Welsh woman writer".