Thomas Knight Sibbald (c1868-1929) of Shelvoke and Drewry
1929 Obituary 
THOMAS KNIGHT SIBBALD spent fifteen years of his life in Egypt, where he became superintending engineer of the Boulac Engine Works at Cairo.
He returned to England during the War and took up work at a munitions factory in Leeds.
At the end of the War he secured an appointment with the Leeds Forge Company and three years later joined Messrs. Shelvoke and Drury of Letchworth as director, holding this position until his death on 29th October 1929, at the age of 61.
Mr. Sibbald served his apprenticeship in the locomotive department of the Midland Railway and afterwards went to sea for two years and obtained an extra chief engineer's certificate of the Board of Trade.
He became a Member of the Institution in 1907.