In March 1810, when Keats was 14, his mother died of tuberculosis, leaving the children in the custody of their grandmother. She appointed two guardians, Richard Abbey and John Sandell, to take care of them. That autumn, Keats left Clarke's school to apprentice with Thomas Hammond, a surgeon and apothecary who was a neighbour and the doctor of the Jennings family. Keats lodged in the attic above the surgery at 7 Church Street until 1813. Cowden Clarke, who remained a close friend of Keats, described this period as "the most placid time in Keats' life."