Simplify the following text for a Grade 6 native English-speaking person.
Original: In 1841 the family was living at Illogan , Cornwall , but by 1848 Johns had migrated to Wales , taking work as an iron ore miner , probably at the Clydach Iron Works .
Simplified: In 1841 the family was living at Illogan , Penwith , Cornwall . By 1848 Johns had moved to Wales , working as an iron ore miner , at the Clydach Iron Works .