Earl, Horton and Co
of Orchard Place, Sheffield
1830 John Brown (1816-1896) commenced his apprenticeship
1831 Mentioned. Earl, Horton and Co. [1]
1836 Moved to Rockingham Street and the works were known as the Hallamshire Works
1844 'Hallamshire Works, situate in Rockingham street, in Sheffield aforesaid, now in the occupation of Messrs. Charles Earl and Co'[2]