John Simcoe Macaulay (13 October 1791 – 20 December 1855) was a businessman and political figure in Upper Canada.
His parents came to Upper Canada in 1792, enjoying the patronage of Lieutenant-Governor Sir John Graves Simcoe, who was also his godfather and for whom he was named.
When he resigned in 1835, he returned to York, Upper Canada, which had been renamed Toronto the previous year, to manage his inheritance.
The appointment was disputed because the candidate favoured by the Family Compact had been ignored and others did not consider Macaulay a genuine resident of the province.
On that side, Mrs Macaulay was a niece of Admiral Sir Benjamin Hallowell-Carew, of Beddington Park, Surrey, and his brother Ward Hallowell (who was later known as Ward Nicholas Boylston), a great benefactor of Harvard University; they were two of the nephews of Governor Moses Gill.
He did travel back to North America in 1852, on the SS Great Britain,[1] however he died in Rochester in 1855, and his wife survived him until 1862.