William Stewart Geddes Manson was born on 14. Mar. 1884 at Glasgow, Lanarkshire, Scotland. He was the son of
James Manson and
Ann Machray. William Stewart Geddes Manson immigrated in 1886. He married
Eleanor Maria Smith, daughter of
George Alfred Smith and
Eleanor Rebecca Morris, on 15. May. 1904. William Stewart Geddes Manson married
Eleanor Maria Smith, daughter of
George Alfred Smith and
Eleanor Rebecca Morris, on 15. May. 1905 at Richfield, Sevier County, Utah. William Stewart Geddes Manson was shown in the census on 16. Apr. 1910 as a clerk, store.
William Stewart Geddes Manson and
Eleanor Maria Smith appeared on the census of 16. Apr. 1910 at Garfield, Salt Lake County, Utah; 2 children, 2 living.

In the census on 3. Jan. 1920 William Stewart Geddes Manson was named W. S. G. Manson. William Stewart Geddes Manson was shown in the census on 3. Jan. 1920 as an electrician, mine.
William Stewart Geddes Manson and
Eleanor Maria Smith appeared on the census of 3. Jan. 1920 at Kenilworth, Carbon County, Utah. William Stewart Geddes Manson was shown in the census on 9. Apr. 1930 as an electrician, coal mine.
William Stewart Geddes Manson and
Eleanor Maria Smith appeared on the census of 9. Apr. 1930 at Kenilworth, Carbon County, Utah. William Stewart Geddes Manson died on 18. Jul. 1959 at Price, Carbon County, Utah, at age 75. He was buried at Monroe City Cemetery, Monroe, Sevier County, Utah.