William Parr was an English courtier and nobleman who became Marquess of Northampton. In 1542 he received the property described in the Essex fine, including Abells in Halsted alias the manor of Halsted.

The source does not establish how long the manor remained in his hands.

Research sources:
- Essex Feet of Fines, Michaelmas and Hilary 1542, William, Earl of Southampton, Antony Brown, knight, and Thomas Wriothesley versus William Parr, knight, Lord Parr, and Anne his wife. — https://www.henhamhistory.org/essex-feet-of-fines/
- Wikipedia biographical reference — https://en.wikipedia.org/wiki/William_Parr,_1st_Marquess_of_Northampton