William was born about 1683, the son of unknown parents. The place is not known.
He died in 1768. The place is not known.
His wife was Barbara Rutherford. They were married, but the date and place have not been found. Their two known children were William (c1709-1788) and James (c1730-1803).
Genealogical History and Pedegree of the Family Montgopmery, Compiled by Thomas Harrison Montgomery, printed for private Circulation 1863, page 147.
William Montgomerie of Macbie Hill, married Barbara, daughter
of Robert Rutherford of Rowland. He died, 1768, aged 85, and left
I. 'W'illiam, afterw.ards Sir William, his successor, and
II. James, afterwards Sir James Montgomery of Stanhope.