Her genealogical sketch is here.
From artuk.org.
Rembrandt portraits showing women in dark dresses against dark backgrounds wearing huge ruffs are a cultural icon. This is a British counterpart.
Keywords: 1631, Johnson, Margaret Miller, Margaret Heath, Lady Heath, Miller family, Heath family, British, curly coiffure, partlet, scoop neckline, neck ruff, bodice, crescent neckline, rosettes, jewel rope, puffed paned virago sleeves, arm bands