 Flora Dunn Gardner, who had issue.Dunn Gardner married twice.His first wife, whom he married in 1847, was Mary Lawson (d. 13 April 1851), elder daughter of Andrew Lawson, of Boro Bridge, Boroughbridge, co York formerly MP for Knaresborough, and granddaughter maternally of the late Sir Thomas Gooch, Bt., of Benacre, co. Suffolk.