William James Stewart Lockyer (3 January 1868 – 15 July 1936) was an English astronomer and physicist.
[1] William was the fifth son of Sir Norman Lockyer and his wife Winifred née James.
In 1920 he succeeded his father as director at the newly renamed Norman Lockyer Observatory in Sidmouth.
[4] In 1921 he married Kate Irene widow of Mr. William Shaw Wright and daughter of Mr. Alfred Talbot, of Southend on Sea, who survived him.
[3] He collapsed while walking down the drive leading to the house of his step-mother, Lady Thomazine Mary Lockyer, at Salcombe Hill, Sidmouth and died suddenly on 15 July 1936.