Louisa Powell MacDonald read the book to her children to gauge its worth if published, and Greville remembers his "braggart avowal that I wished there were 60,000 volumes of it".
Greville helped keep his father's memory alive by arranging the publication of new editions of his works, and by writing the painstakingly-researched biography George MacDonald and His Wife (1924).
Greville wrote books on widely varied subjects, including a biography of his father and mother George MacDonald and His Wife, complex works such as The Sanity of William Blake and The Religious Sense in its Scientific Aspect, and fairy tales such as Count Billy and The Magic Crook, or The Stolen Baby.
In 1900 Greville's parents moved to St George's Wood, Grayswood Road, Haslemere, into a house that he had had built for them, designed by his architect brother, Robert Falconer MacDonald, where his frail father spent his final few years.
Greville described his involvement in the Peasant Arts movement thus: "Happy that I might possibly help them, I soon assigned my scanty leisure, along with some too easily earned money, to the support of their Society.
MacDonald's writings varied in subject matter from medicine to ethical issues to fairy tales—not including editorial contributions to his father's works.