Source: Michael Doyle Their Name Liveth For Evermore: The Great War Roll of Honour for Leicestershire and Rutland.
He was the son of Edwin Forbes Jeffries, a solicitor, born 1849 in Carmarthenshire, Wales and his wife Mary Frances (nee Williams, married in the 2nd quarter of 1882 in the Brentford, Middlesex district), born on the 29th August 1857 in Torquay, Devonshire and baptised on the 9th October 1857 in Tormoham, Torquay, and who was the daughter of John Joseph Williams of H.M. Dockyard, Pembroke, Wales. Harold John Fotheringham was born on the 30th December1883 in Bedford Park, Chiswick, Middlesex, his siblings were, Phyllis Mary, born 1885, Cuthbert Stanton, born 1888 and Hugh Stephen, born 1890, all his siblings were born in Market Harborough, Leicestershire, in April 1891 the family home was at St. Mary’s Road, Great Bowden, Leicestershire. In March 1901 Harold was absent from the family home at 47, High Street, Market Harborough, residing there was his father, a solicitor, his mother and siblings, Cuthbert, Hugh and Margaret Gwynedd Lucy, born 1899 in Market Harborough, also residing with the family was Harold’s maternal Aunt Florence S. William, living on her own means, born 1860 in Pembrokeshire, Wales, Harold was student at St. Edward’s School for Gentlemen’s sons, and was residing as a boarder at Summertown Oxford. In April 1911 Harold was absent from the family home at 47, High Street, Market Harborough, residing there was his father, a solicitor, his mother and siblings, Phyllis, Hugh, an Oxford medical student and Margaret, a schoolgirl. Harold was educated at St. Edward’s School, Oxford, and Wadham College, Oxford where he was a member of the O.T.C., and graduated B.A. in 1905, subsequently becoming a solicitor in practice with his father at Market Harborough, Leicestershire. He joined the 5th Battalion of the Leicestershire Regiment as a 2nd Lieutenant in 1905, and was promoted Lieutenant in June 1906, and Captain in May 1911, and Major (posthumous) on the 28th September 1915. He volunteered for foreign service upon the outbreak of war in August 1914 and served with the Expeditionary Force in France and Flanders from the last week in February 1915, being killed in action when leaving the trenches near Hooge, Ypres, Belgium on the 26th September 1915. He was buried in the hospital grounds at Lijssenthoek, Belgium. His Colonel wrote, “Our loss is great. As well as being an excellent Company Commander and capable soldier, socially he was always merry, and cheered us on all occasions,” and one of his subalterns wrote, “It was a nasty shock because I liked Jeffries. He was a topping chap. He hated the war, but never tried to get out of things, and he often went into considerable danger to be with his men, when he might very well have kept out of it as a Company Commander.” While at Oxford he was secretary and afterwards captain of his College Boat, and stroked the Eight in the Torpids and Eights, he was also in his college Rugby Football Team and also played for Leicester Tigers. Harold was unmarried.
The War Diary records: 26 Sept-15 - TRENCHES. At 9.50pm relief by 4th Battalion LINCOLNSHIRE REGT complete. At 10.00pm rapid rifle and shell fire from direction of HOOGE. The Commanding Officer and Adjutant and 100 men of “B” and “C” Companies stayed in breastwork in rear of ARMAGH and SQUARE WOOD and got in touch with the 4th Battalion LINCOLNSHIRE REGT. At 11.00pm situation became normal and on hearing that services were not needed the party reported to Brigade Reserve. Casualties Captain JEFFRIES killed by a bullet on night of relief near MANOR FARM. Other ranks 14 killed, 40 wounded.
On Friday October 8th 1915 The Melton Mowbray Times & Vale of Belvoir Gazette published the following article under the heading. “DISTRICT WAR ITEMS.” – TERRITORIAL OFFICER KILLED. News has come to hand that Captain H. J. F. Jeffries, of Market Harborough, Commanding E Company of the 5th Battalion Leicestershire Territorials, has been killed in action. He was hit by a rifle bullet and killed instantaneously. Captain Jeffries was only gazetted temporary Major on the 27th inst. He was educated at St. Edward’s School and Wadham College, Oxford, and was a B.A. He stroked his college boat in the Torpids and Eights, and also played Rugby football in his College XV., and afterwards with the Tigers. He was articled to his father (Mr. E. F. Jeffries, solicitor and Registrar of the County Court at Market Harborough) and was admitted a solicitor in 1911.

Source: Leicestershire War Memorials Project.
Harold Jeffries made four appearances for Leicester FC's 1st XV in 1905.
https://royalleicestershireregiment.org.uk/entity/100588-jeffries-harold-john-fotheringham?q=