In 1554 Thatteworh was granted to William Petre as the 'manor and park of Tatworthy' and remained in the family until 1790. Tatworth in the 1850s extended to  and had a population of 852.
The land known as Tatworthy was granted to William Petre in 1554 and remained in his possession until 1790.  By the 1850s, Tatworth had grown significantly, with a population of 852 people.