Brennen Higher Secondary School, Thalassery are named after him.
Born in London in 1784, Brennan joined the East India Company in 1810.
In 1824, Brennan was appointed Master Attendant at the Thalassery Port Office, where he continued for 35 years.
[1] But later, it is said that Brennan had a daughter on a woman from Thalassery, whose name was Flora, and she was buried in St. Stephen's Church Cemetery in Ooty at the age of 16.
Brennan in his will mentioned to set up a 'free school' in the town of Thalassery to provide free education to all.