A note I found on Ancestry. Seems he was known as Ben
War record: Ben was a conscientious objector in World War I. He spent time in Dartmoor prison for this and later had to work on the land. His father died towards the end of the war and Charles Alfred came up from Cornwall to run the business until Ben was able to take it over. He later said that World War II was different and he would have had to fight.
William (Ben) Earl Sibthorpe - 14th February 1890 ~ 12th June 1942, age 62. Father: William Masters Sibthrope - 7th June 1855 ~ 8th December 1918, age 63. Mother: Charlotte Earl - 25th November 1850 ~ 11th December 1935, age 85. Wife: Janet Fullarton Boyd - 13th August 1889 ~ 21st December 1989, age 98. Children: Elsie Margaret Sibthorpe - 23rd December 1920 ~ 31st October 2006, age 85. Kathleen Sibthorpe - 20th October 1924 ~ 14th August 2017, age 92. Siblings: Clara Martha Nears - 22nd September 1881 ~ 1974, age 92. Charles Alfred Sibthorpe (E. Sarah) - 28th October 1882 ~ 27th December 1952 Mary Gertrude Sibthorpe - 1884 ~ 27th August 1956, age 72. Annie Sibthorpe - 1886 ~ 17th December 1893, age 7. Elsie Sibthorpe - 18th March 1888 ~ 16th October 1981, age 93. Mabel Jessie Sibthorpe - 20th May 1891 ~ 20th February 1980, age 88. Dorothy Jane Boyd - 14th November 1893 ~ 20th June 1979, age 85.