Early-attested site in the Parish of Pancrasweek
- Hermondesworda 1086 DB(Exon)
- Hermodeswortha 1166 RBE
- Hermodeswurth 1234 Fees396
- Her(e)man(n)eswrth(i) 1197,1199 FF 1242 Fees791 1279 Ipm
- Hermandeswo(r)th 1316 Ipm 1333 SR
- Westharmesworthie 1550 Pat
This is probably 'Heremōd 's worþig,' but there was early confusion with other OE pers. names such as Heremund and Hereman . Cf. Harmondsworth (PN Mx 40).