[2] The family was originally of Montrose, but in about 1696 one of its members settled in Edinburgh, where in due course Thomas was educated at the Royal High School.

Following the death of his brother in 1778, as surviving partner Thomas became sole head of the firm, and it was under his direction the banking house rose to the highest distinction.

His ambition was to establish his character as a man of business and make a fortune, and he lived to succeed and enjoy his reputation and wealth.

[2] In May 1763[1]: 25  he married Susannah Starkey (variously reported as Elizabeth,[2] Betty, or Susan),[1]: 25  a young woman whose origins were humble.

[10] She died ten years later, bequeathing her property to Thomas's granddaughter, her step-granddaughter Angela, the youngest daughter of Sir Francis Burdett.