John Hercules William Rowley, 5th Baron Langford of Summerhill1 
He succeeded as the 5th Baron Langford of Summerhill, co. Meath [I., 1800] on 29 October 1919.1
Hon. George Cecil Rowley1

He fought in the First World War.1 He gained the rank of 2nd Lieutenant in the 5th Battalion, King’s Royal Rifle Corps.1
Hon. Noel Maud Rowley1 
Lt.-Col. William Chambré Rowley, 6th Baron Langford of Summerhill1 
He fought in the Afghan War between 1879 and 1880.1 He was member of Gentlemen-at-Arms in 1899.1 He fought in the First World War.1 He was awarded the Croix de Guerre.1 He gained the rank of Lieutenant-Colonel in the Royal Artillery.1 He succeeded as the 6th Baron Langford of Summerhill, co. Meath [I., 1800] on 29 September 1922.1
Guy Hardy MacCaw1 
He was awarded the Military Cross (M.C.)1
Hon. Mabel Maud Legh1 
From 24 July 1889, her married name became Rowley. After her marriage, Hon. Mabel Maud Legh was styled as Baroness Langford of Summerhill on 29 September 1922.
Hon. Randolfe Thomas Rowley1 
He gained the rank of officer in the Royal Navy.1
Children of Hon. Randolfe Thomas Rowley and Rosetta Fletcher
- Clotworthy Wellington Thomas Edward Rowley, 7th Baron Langford of Summerhill+2 b. 1 Jun 1885, d. 15 Jul 1952
- Doris Louisa Rowley2 b. 6 Oct 1887, d. 4 Jun 1893
Thomas Henry Fletcher1
Child of Thomas Henry Fletcher
- Rosetta Fletcher+2 d. 25 Nov 1921
Rosetta Fletcher1 
From 4 October 1883, her married name became Rowley.
Children of Rosetta Fletcher and Hon. Randolfe Thomas Rowley
- Clotworthy Wellington Thomas Edward Rowley, 7th Baron Langford of Summerhill+2 b. 1 Jun 1885, d. 15 Jul 1952
- Doris Louisa Rowley2 b. 6 Oct 1887, d. 4 Jun 1893
Clotworthy Wellington Thomas Edward Rowley, 7th Baron Langford of Summerhill1 
He fought in the First World War, with the New Zealand Forces.1 He succeeded as the 7th Baron Langford of Summerhill, co. Meath [I., 1800] on 22 January 1931.1
Child of Clotworthy Wellington Thomas Edward Rowley, 7th Baron Langford of Summerhill and Florence Eileen O’Donovon Shiel
- Clotworthy Alexander Rowley2 b. 10 Dec 1923, d. 15 Mar 1924
