Sir John McDougall (3 March 1844 - 8 May 1917).
The son of Alexander McDougall of Manchester, he was a Fellow of the Chemical Society.
Member of the Progressive Party elected to the London County Council, representing Tower Hamlets, Poplar from 1889-1913. The Chairman of the County Council for 1902-03, he was knighted as part of the Coronation Honours of Edward VII in June 1902.
One of the McDougall Brothers who had developed a patent substitute for yeast, which revolutionised home baking.
Sir John McDougall Gardens, created mid 20th century named after him (had flour mill in the area)
Some information here .