How it started
Portland
In 1875, William D. Fenton began practicing law as a partner at Portland law firm McCain and Fenton. Upon his death, Fenton's home library was donated to the University of Oregon, which built Fenton Hall in his name. His home, the William D. Fenton House, was added to the National Register of Historic Places in 1979.
After Fenton's passing in 1918, McCain and Fenton was renamed to Hampson and Nelson, and moved to the Pacific Building in Portland. From 1918 to 1979, the firm went through several leadership and name changes with the addition of partners like Herbert Anderson, Oglesby Young and William Lubersky. In 1979, John Bledsoe joined as a naming partner, changing the firm’s name to Spears, Lubersky, Campbell and Bledsoe. Anderson and Young were also added to the naming partner group, renaming the firm in 1988 to Spears, Lubersky, Bledsoe, Anderson, Young and Hilliard.
Seattle
Lane Powell's Seattle office began in 1889 when John H. Powell arrived in Seattle and practiced law in the firm Stratton, Lewis & Gilman. In 1900, William A. Peters and Powell entered into a partnership under the name Peters & Powell, located in the Dexter Horton Building. The addition of partners such as W. Bryon Lane and Gordon Moss in 1959 led the firm to be named Evans, McLaren, Lane, Powell & Moss. In 1966, Pendleton Miller joined the firm as naming partner, changing the firm to Lane, Powell, Moss & Miller. During this time, the firm expanded to Anchorage by merging with Ruskin, Barker & Hicks.
Mergers
From Wikipedia’s article on Lane Powell, shared under CC BY-SA 4.0.2