"Which issueth out of Moswell Hill in Hornsey parish and therefore we will call it Mosa, or if you please Mosella. This rivulet falling from the hill passing in between Hornsey and Tottenham Wood and running through the middeth of the Town in a meaner fashion of the Greek Capital Omega, leaving the parsonage and vicarage upon the north, runneth along by the highway until it comes to the great stone bridge where it suddenly maketh a right angle and falling under the same hasteth in a straight course to a branch of the Leigh divided from it by the labour of mans hand for a mill streame’"
From an account by Bedwell in 1613