UK, De Ruvigny’s Roll of Honour
Segeant William Forbes Thomson, 2nd Battalion (92nd Foot) The Gordon Highlanders, eldest son of the late Alexander Thomson, by his wife Isabella, daughter of William Forbes; born Rathen, county Aberdeen, 20 January 1890; educated Whiterashes Public School, Aberdeen; was a Gardener at Brucklay Castle, county Aberdeen; enlisted 2 September 1914: served with the Expeditionary Force in France and Flanders from 17 March 1915; was wounded 16 May; returned to France 11 November 1915; again wounded 20 July, 1916, and invalided home: returned to France in August 1917; proceeded to Italy in the following November, and was killed in action on the Piave [River] 5 February 1918. Buried in the Bavaria [Giavara] British Cemetery, near Nervesa [Italy]. His Commanding Officer wrote: “He was a gallant soldier, and one of the most trusted men in my company, and he will be a great loss both to the company and myself, who deeply mourn his loss.” He married at New Deer, county Aberdeen, May 1917, Alice Evelyn (Kirkbrae, New Deer), daughter of Gavin Greig, Master of Arts, Justice of the Peace, and had a daughter, Isabel Mary.

Note Bruklay Castle, also known as Brucklay House is in the Buchan area of Aberdeenshire. It is now a ruin.

findagrave.com
Sgt William Forbes Thomson
DEATH 5 Feb 1918
BURIAL Giavera British Cemetery
Giavera del Montello, Provincia di Treviso, Veneto, Italy
PLOT Plot 2. Row C. Grave 4.
MEMORIAL ID 56403344
Gravesite Details Serjeant, Gordon Highlanders. Age: 28.

UK, WWI Pension Records
Payable in Canada
William Forbes Thomson, Regimental Number S/2490, 2nd Gordon Highlanders, Sergeant
Form received March 3 1918, Date of Notification of death February 23 1918
Date of death February 5 1918, killed in action
Widow Alice Evelyn, Kirkbrai Cottage, New Deer, Aberdeenshire, born February 16 1891
Children: Isabel Mary, born November 18 1917, date of expiry November 18 1933
Pension 22/11 a week from August 26 1918

Scotland Select Births and Baptisms
Alice Evelyn Greig, born February 16 1891, New Deer, Aberdeenshire, father Gavin Greig, mother Isabella Stuart Burgess Greig

In the 1891 Scotland census
Whitchill [as transcribed - Whitehill?] School House, New Deer, Aberdeenshire
Head Gavin Greig, age 35, teacher (elementary P S), born Newmachar, Aberdeenshire
Wife Isa S B Greig [as transcribed - Isabella Stuart Burgess Greig], age 35, born Foveran, Aberdeenshire
Daughter Edith M Greig, age 12, scholar, born Aberdeen, Aberdeenshire
Daughter Mary J. Greig, age 10, scholar, born New Deer
Daughter Annabel Greig, age 9, scholar, born New Deer
Son Gavin Greig, age 7, scholar, born New Deer
Daughter Maggie L. Greig, age 6, scholar, born New Deer
Son Alexander B. Greig, age 4, born New Deer
Daughter Alice E. Greig, age 1 month, born New Deer

In the 1901 Scotland Census
Whitehill Schoolhouse, New Deer, Aberdeenshire
Head Gavin Greig, age 45, public school teacher, born New Machar, Aberdeenshire
Wife Isabella S. Greig, age 45, born Foveran, Aberdeenshire
Daughter Edith M. Greig, age 22, born Aberdeen, Aberdeenshire
Daughter Mary J. Greig, age 20, student, born New Deer
Daughter Annabel Greig, age 19, pupil teacher, born New Deer
Daughter Maggie L. Greig, age 15, scholar, born New Deer
Son Alex B. Greig, age 14, scholar, born New Deer
Daughter Alice E. Greig, age 10, scholar, born New Deer
Daughter Nellie Greig, age 6, scholar, born New Deer
Daughter Florence O. Greig, age 4, scholar, born New Deer
1 boarder

Aberdeen Electoral Rolls 1919
Kirkbrae cottage
Mrs. Alice Evelyn Thomson

Numerous Family Trees at ancestry give her death date and location.