Butler married twice. Firstly, on 19 December 1861, to Georgina Isabella Elliot (1839–1883), with issue: • Agnes Isabel Butler (1865–1949), married Edmund Whytehead Howson •
Edward Montagu Butler (1866–1948), first-class cricketer and father of Olympic gold medallist
Guy Montagu Butler • Edith Violet Butler (1869–1887) •
Arthur Hugh Montagu Butler (1873–1943), House of Lords Librarian • Gertrude Maud Butler (1880–1933), married Bernard Morley-Fletcher Secondly, in August 1888 at
St George's, Hanover Square, aged 55, Butler married
Agnata Frances Ramsay (1867–1931), a 21-year-old classicist who in 1887 attained the highest marks in the Classical Tripos at Cambridge. They had issue: • Sir
James Ramsay Montagu Butler (1889–1975), politician • Gordon Kerr Montagu Butler (1891–1916), killed in action in the First World War • Sir
Nevile Montagu Butler (1893–1973), diplomat ==Notes==