The Calthorpe Barony (1796) became extinct in June 1997 when the last Baron died without a male heir.
Historical records of the Gough-Calthorpe family are held in multiple archives.
Family papers are held at the Hampshire Record Office.
[2] Records of the Calthorpe Edgbaston Estate are held at the Library of Birmingham.
[3] Medieval deeds of properties owned by the Gough-Calthorpe family in Wolverhampton are held at the Cadbury Research Library (University of Birmingham).