Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,396 pages of information and 233,518 images on early companies, their products and the people who designed and built them.
of South Devon Iron Works, Newton Abbot
John Polyblank (c1813- )
1851 Wolborough census 1851. John Polyblank, 38 Millwright, b Milton; Elizabeth Polyblank 30 wife, b Harberton; Charles Polyblank, 2 son, b Newton Abbot.
1853 Partnership dissolved between Immanuel Pyle and John Polyblank of Newton Abbott, brass founders, iron founders, smiths, millwrights 
1861 Highweek Road. John Polyblank, H M 49 ironfounder & machinist, b South Milton; Elizabeth, wife, 41, b Harberton; Charles, son, 12, b Wolborough; Emma, dau, 9, b Wolborough; Alfred, son, 4, b Wolborough; Georgina Andrews, visitor, unm, 38, b Harberton