Alice Montacute was an English noblewoman and the suo jure 5th Countess of Salisbury, 6th Baroness Monthermer, and 7th and 4th Baroness Montacute, having succeeded to the titles in 1428. Her husband, Richard Neville became 5th Earl of Salisbury by right of his marriage to Alice.
Alice was born in 1407, the daughter and only legitimate child, of Thomas Montacute, 4th Earl of Salisbury, and Eleanor Holland, who was the daughter of Thomas Holland, 2nd Earl of Kent, and Lady Alice FitzAlan. The latter was a daughter of Richard FitzAlan, 10th Earl of Arundel, and Eleanor of Lancaster.
Source: Wikipedia