From Thyssen-Bornemisza National Museum:
John George Brown (November 11, 1831 – February 8, 1913), the son of an impoverished lawyer, was born near Durham, England.
At fourteen he began a seven-year apprenticeship as a glass-cutter in Newcastle-on-Tyne, studying at night from 1849-1852 with William Bell Scott at the School of Design.
From 1852-53 he worked at the Holyrood Glass Works, Edinburgh, studying evenings at the Trustees Academy with Robert Scott Lauder.