Martha, the only other child of Colonel Caleb Heathcote, who came to maturity, married Lewis Johnston, of Perth Amboy, New Jersey, and left two sons -- John L. and Heathcote-- and two daughters -- Anne and Margaret. The line of Heathcote Johnston is now extinct, and that of John L., it is said, is now extinct in the males. Anne married William Burnet, son of Governor Burnet of New York, and grandson of the famous Bishop Burnet of King William's and Queen Anne's day, but this line is also extinct. Margaret, the other daughter of Martha Heathcote Johnston, married Bowes Read, a prominent and distinguished public man of New Jersey, and her grandson was the late Rt. Rev. Charles P. McUvaine, Bishop of Ohio, who has many descendants.

The Father of Colonel Heathcote, Gilbert the Mayor of Chesterfield, was a Roundhead in the English Civil War, and served with credit in the Army of the Parliament against King Charles the First. He died in 1690 and lies in the burial place of the Heathcoteson the north side of the altar rails, in the ancient Parish Church of Chesterfield, the cruciform church 600 years old, with the central twisted spire 230 feet high and 14 feet out of the perpendicular, yet perfectly secure, which, like the Leaning Tower of Pisa, is a puzzle whether it was or was not so erected originally. Against the wall of the chancel arch is a very handsome mural monument in the ornamented style of the 16th century, erected jointly by all his sons to his memory bearing this inscription ;