Sampson Kempthorne (1809 1873) was a workhouse architect. He began practising in Carlton Chambers on Regent Street in London. His father was a friend of the Poor Law Commissioner Thomas Frankland Lewis, which may have helped him to get the commission to build workhouses.
Kempthorne came up with two designs the square plan and the hexagonal or "Y" plan both contained sections for the different types of inmates (men, women, boys, girls, infirm). The space between different wings was used to provide areas where inmates could exercise segregated from the other groups.
Kempthorne designed workhouses in Abingdon, Andover, Bath, Crediton, Hastings, and Newhaven