He joined the Society of Arts in 1756 , two years after its formation , and encouraged the involvement of Humphrey Gainsborough the inventor and Thomas Powys .
Sambrooke Freeman was twice an MP , for Pontefract and Bridport .
Sambrooke Freeman joined the Society of Arts in 1756 , two years after its formation , and encouraged the involvement of Humphrey Gainsborough the inventor and Thomas Powys .
Sambrooke Freeman was twice an MP , for Pontefract and Bridport .