The story
Carey Olsen was formed in 2003 following the merger between two prominent Channel Island firms, Carey Langlois in Guernsey and Olsens in Jersey. The former had roots dating back to 1898 while Olsens was, at the time, a relative newcomer having been started in 1981 by Advocate Anthony Olsen.
From Wikipedia’s article on Carey Olsen, shared under CC BY-SA 4.0.4