Mis-filed (not indexed) with Scott in the WW1 Service Records (WO 363):

Andrew FORSYTH, enlisted Glasgow February 1915, declared age 25y 11m, birthplace Keith Banffshire. Trade - Warehouseman. Died 1917 (possibly late 1916). L/Sgt 9254 Gordon Highlanders.

Widow MAGGIE - home address Dundee.
Mother ANNE H - home address Newark, New Jersey.
Brothers - John H, b c1877 (Keith) - son John b c1904; William A H, b c1879 (Glasgow) - son James b c1904; Thomas H, b c1881 - daughter Effie b c1904 (New Jersey).
Sisters - H A Jackson, b c1885 (Marske by the Sea); J E ELSOM, b c1887 (Marske by the Sea) - daughter Anne H b c1917; Nancy, b c1892 (New Jersey).
There is also a married aunt (Mrs Sidney something) in Ferndown, Dorset.

Anc****y, SCO, pages 88594 to 88610