AMWELL, (Hertfordshire) a little to the S. of Ware, 20 m. from London, famous for giving rise to the New River, which supplies this city, after a course of 36 m. but is furnished however with a large share of its water, by a cut out of the r. Lee, that runs to Hackney. One part is called Amwell-MAGNA, The other PARVA, at which is the head of the New r. Is a member of the p. of All-Saints, in Hertford, and form. bel. to Waltham-Abby; but, at the ref. K. Hen. VIII. gave it to Leon. Chamberlain and Richard Andrews, Esqrs. who sold it to John Knighton; from whose posterity it passed to John Gardiner, Esq; whose grandaughter conveyed it by marriage to Hen. Dunster, Esq;.