In a parlor, she studied a painting of the Dickinson children above an ornate fireplace. She asked herself: “If I were living in this space, who would I want to hang over my fireplace?” ...

Phoebe Dickinson, a Gloucestershire-based artist ... “I asked Phoebe to paint our children because I could see she was brilliant at interiors as well as portraits,” says the Marchioness.

Employing a largely neutral palette of lilac whites and cool grays, Dickinson conveyed forms and light by laying on broad swathes of paint with a palette knife. “Don’t let the brush wander into the ...