Maxwell married Mary Fletcher-Campbell, daughter of Henry Fletcher-Campbell, of
Boquhan, Stirling, on 20 January 1869. She predeceased him on 3 September 1910. By her, he had two sons and three daughters: • Ann Christian Maxwell (5 September 1871 – 5 April 1937), married
Sir John Stirling-Maxwell, 10th Baronet • Winfred Edith (19 July 1873 – 30 October 1968), married Alastair Graham-Moir of Leckie. • Beatrice Mary (24 January 1875 – 11 April 1938), married Ernest Walker, son of
Sir James Robert Walker, 2nd Baronet in St Margaret's Westminster on 10 October 1901. •
Lt. Col. Aymer Edward Maxwell (26 October 1877 – 9 October 1914). In 1909, he married Lady Mary Percy, daughter of
Henry Percy, 7th Duke of Northumberland and by her had one daughter and three sons before he died of wounds suffered at Antwerp while serving with the
Lovat Scouts: • Christian Maxwell (31 July 1910 – 7 May 1980), died unmarried •
Sir Aymer Maxwell, 8th Baronet (7 December 1911 – 8 July 1987) • Eustace Maxwell (24 February 1913 – 12 April 1971), married Dorothy Bellville, with whom he had one daughter and one son: • Diana Mary Maxwell (born 19 January 1942) •
Sir Michael Maxwell, 9th Baronet (1943-2021) •
Gavin Maxwell (15 July 1914 – 7 September 1969), naturalist, and author of
Ring of Bright Water Sir Herbert died at
Monreith House,
Wigtownshire, aged 92. ==Works==