Marable researchers are not certain Mary's maiden name was Travis. She was the second wife of William.

Some Marable researchers claim that William was the only son of George and a first wife, also named Mary.

The Majors and Their Marriages

Marables of James City (p. 116) and Marables of Charles City (p. 117)
See attachment on Ancestry for Matthew.

Mjor George Marable had married, apparently in the latter part of 1699, Mary, daughter of Captain William Hartwell of James City County. They had issue:

I. George Marable of Charles City County, whose descendants for consistency’s sake are grouped hereafter.

II. Henry Hartwell Marable of Sussex county, who apparently had no issue….

III. William Marable, who represented James City county in the Virginia House of Burgesses 173640. He was living at least as late as 1749, as in the April of that year he brought suit in York county against John Taylor. He had, with probably other issue: John Marable, living in 1786; and Matthew Marable of Mecklenburg, also in his day a burgess, who died in 1786, leaving issue, Matthew Marable, Richard Marable, Champion Marable, John Marable, and one daughter, Elizabeth Marable, who married David Stokes.

IV. Benjamin Marable…