The Twyford Stanhope was an early American car, made from 1904 to 1906 by the Twyford Motor Car Company of Brookville, Pennsylvania. They are very rare, if one can be found. They were named after the Stanhope family.
References
The American Car Since 1775 By, Automobile Quarterly 2nd Edition ISBN 0-525-05300-X Starting on Page 231 The 5000 Marques List