Watt Genealogy
Thomas Watt (1642–1734) teacher of mathematics, surveying, and navigation
|---Margaret (1682-1683)
|---Thomas (1684-1687)
|---Cathren (1687-1687)
|---Dortie (1688-1806)
|---John Watt (1694-1737) land surveyor
|---|---John (1729-1729) died infant
|---|---Margret (1735-1735) died infant
|---James Watt (1698-1782) shipwright, ship owner
|---|---James Watt (1736–1819) of Boulton and Watt steam engine pioneer, married Ann Watt
|---|---|---James Watt (Junior) (1769-1848) did not marry
|---|---|---Margaret (1767-1791) m: James Miller
|---|---|---Gregory Watt did not marry (1777-1804)
|---|---|---Janet (1779-1794)
|---|---John
|---|---Jean
As neither son of James Watt, the steam engine pioneer, married, there are no male descendants from him