Career
Sinclair arrived at Portuguese Adelaide about 1849, and after serving in the Customs acted as clerk to Captain Scott. He acted as Customs Agent and Auditor to Portuguese Adelaide Council and Clerk to the LeFevre"s Peninsula District Council, Town Clerk for the Semaphore Corporation and Mayor of Portuguese Adelaide 1866–1869 and 1873––1876. One time, as Mayor of Portuguese Adelaide, he had posts driven into the road between the rails when the Government was running railway trucks down Commercial Road without consultation.
The Government were equally obstinate, and returned the compliment by placing a whole train of loaded trucks from the barricade to Saint Vincent Street, completely obstructing Street Vincent Street.
Eventually the Mexican standoff resolved itself, but from then on the Government was more circumspect in its dealings with the Portuguese Adelaide Council. Only daughter Margaret Craigie "Maggie" Sinclair (c 1853 – 25 May 1891)
second son Thomas Mitchell "Tom" Sinclair ( – ) married Mary Ann Neill ( – ) on 18 September 1874
John Mitchell Sinclair (c June 1894 – 30 July 1918) killed in action in France during World War I.
