Thomas Mainwaring Penson (1818–64) was an English surveyor and architect. He was born in Oswestry, Shropshire, the son of Thomas Penson, also a surveyor and architect, and was educated at Oswestry School. He and his brother, Richard Kyrke Penson, then trained in their father's practice.[1] He designed buildings in the area of the practice, including stations for the Shrewsbury and Chester Railway.[2] He was appointed as county surveyor of Cheshire and moved to Chester, Cheshire.[1] Here he laid out Overleigh Cemetery in 1848–50. This has been designated at Grade II in the National Register of Historic Parks and Gardens.[3][4] He is credited with pioneering the Black-and-white Revival (vernacular or half-timbered) style in the city during the 1850s.[5][6] His first building in this style was constructed in Eastgate Street in 1852, but it has since been demolished.[7]