"In 50 years' time I will be known as the brother of Gwen John."

Gwen John's work consists almost entirely of small-scale portraits and still-lifes. Her portraits (usually of anonymous sitters) favored seated women in a three-quarter length format, with their hands in their laps. John painted slowly, often returning to a theme repeatedly. She preferred painting of reduced tone and subtle colour relationships, in contrast to her brother's far more vivid palette. In addition to studio work, she made many sketches and watercolours of women and children in church. Unlike her oil paintings of solitary women, these sketches frequently depict their subjects from behind, and in groups. She also made many sketches of her cats.