He was the son of
Robert Monteith, DL, JP, of Carstairs, by Wilhelmina Anne, daughter of Joseph Mellish of Blythe, Nottinghamshire. On 13 October 1874 he married Florence Catharine Mary Herbert (17 April 1850 – 23 January 1900), daughter of
John Arthur Edward Herbert and the Hon. Augusta Charlotte Elizabeth Hall of
Llanarth Court at
Llanarth, Monmouthshire. The children from this marriage were: • Gertrude Mary Monteith, nun of the Sacred Heart order. • Major Henry John Monteith, b. Aug 1876; Major in the
Lanarkshire Yeomanry; k.a. Gallipoli, 27 Dec 1915. • Revd. Robert Joseph Monteith, SJ, CF; b. 6 Nov 1877; died 27 Nov 1917 at Ribécourt-la-Tour during the battle Cambrai while serving as a military chaplain. • Major Joseph Basil Monteith, OBE, DL, JP, b. 1878 Major in the
Gordon Highlanders; married Dorothea, daughter of
Sir Charles Nicholson, 1st Baronet of Harrington Gardens and had issue. • Francis Bernard Monteith, settled in Vancouver and worked as a surveyor. • Mary Christina Monteith, married Lt. Col. Lawrie Charles Oppenheim. • Augusta Catherine Monteith, nun of the Sacred Heart order. • Major Montague Edmund Monteith, of the
Maratha Light Infantry, married Isabella Marion FitzGibbon. • Major John Herbert Monteith, Major in the
South Wales Borderers, married Caroline Annie Maguire. • Captain George Michael Monteith, Captain in the
Gordon Highlanders, killed at the battle of Loos in the First World War • Catherine Maria Monteith, nun of the Sacred Heart order. • Christian Mary Monteith, nun of the Sacred Heart order. • Monica Margaret Monteith, married Robert Ogilvie Abercromby. ==Career==