The title Baron Norreys of Rycote was created in the Peerage of England by writ for Sir Henry Norris in 1572. The 2nd Baron Norreys was created Viscount Thame and Earl of Berkshire, both titles became extinct on his death. After two female heirs in the 17th century, the barony of Norreys went to the family of Bertie, and its holder, the 5th Baron Norreys became Earl of Abingdon in 1682. Since that time, the barony Norreys of Rycote has been a subsidiary title of the Earls of Abingdon, who have become Earls of Lindsey in the 20th century.
The heir apparent is the present holder's son Henry Mark Willoughby Bertie, Lord Norreys (b. 1958).
References
Lundy, Darryl. "Henry Norris, 1st Lord Norris". thepeerage.com. p. 1990 § 119899. — reliable sources and more entries in Lundy's database can be found from this first entry