I agree that dates or any other details would help, especially with a common surname and common first names like John and William.
I did find this in 1910:
Portland Ward 10, Oregon
Shaw, Farquhar T., age 43, married once, married for 10 years, born Scotland, parents born Scotland, occupation: street car conductor, able to read & write, owns home with a mortgage
Shaw, Earnestton, wife, age 32, married once, married for 10 years, mother of one child, not living, born Iowa, father born Pennsylvania, mother born Missouri, no occupation, able to read & write
1920 Census, Portland, District 154, Oregon
Shaw, Farquhar, owned home free of a mortgage, male, white, age 53, married, immigrated 1890, naturalized 1896, born Scotland, parents born Scotland, street car conductor
Shaw, Earnesteen, wife, female, white, age 42, married, born Iowa, parents born Iowa, no occupation
1930 Census, Portland, District 485, Oregon, 51 Albert Street
Shaw, Farquhar T., owned home worth $5000, owned radio set, not on a farm, male, white, age 63, married, age at first marriage: 33, able to read and write, born Scotland, parents born Scotland, immigrated 1890, naturalized, street car conductor, not a veteran
Shaw, Earnesteen, wife, female, white, age 52, married, age at first marriage: 22, born Oregon, father born Pennsylvania, mother born Colorado, bookeeper for a store
