The Children's Pilgrimage by L.T. Meade

Cecile and Maurice had not only gone to school by day, but at Mr. Danvers' express wish had for a short part of their stay in London attended a small and excellent night-school, which was entirely taught by deaconesses who worked under the good clergyman.

To this same night-school came, not regularly, but by fits and starts, a handsome lad of fourteen -- a lad with brilliant black eyes, and black hair flung off an open brow. He was poorly dressed, and his young smooth cheeks were hollow for want of sufficient food. When he was in his best attire, and in his gayest humor, he came with a little fiddle swung across his arm.