Bernard was the second son of James William McCraith and Maria Elizabeth Mccraith nee Dickinson.
His father James (b. 19 March 1853), was articled to Samuel Maples, a solicitor, and later entered into a partnership with him, 'Maples and McCraith'. He was a Justice of the Peace from 1892 and was a member of the Conservative Party and served in local politics; he was knighted in January 1918. James' older brother, John Tom McCraith (1847-1919), also served on Nottingham City Council as a Conservative councillor; he was knighted in 1904.
James married Maria, the daughter of Thomas and Elizabeth Dickinson, in 1876 (marriage registered J/A/S Nottingham) and they had five children; Douglas (b. 1 January 1878) and Bernard (b. 2 May 1880) who were both christened at Nottingham St Peter on 28 June 1880, Malcolm (b. 7 February 1882), Kenneth Yorke (b. 1890) and Violet Muriel (b. 1892). All the children were born in Nottingham. Malcolm's date of birth, 7 February 1882, is taken from his Midland Railway record, confirmed by the entry on the Birth Index, birth registered J/F/M 1882, but the CEF Attestation gives his date of birth as 3 December 1882.
In 1891 the family was living at 7 Clumber Road, The Park, Nottingham. Three of the four children were at home on the night of the census; Douglas (13), Malcolm (9) and Kenneth (8 months). James and Marie employed four female general servants. Bernard, was a boarder at the Grosvenor School, 107-109 Waterloo Crescent, Nottingham.
By 1901 Bernard was a student at the Royal Engineering College, Berkshire, and probably went to India later that year. His parents were still living on Clumber Crescent (Ellenborough House) and were at home on the night of the census with their four other children, Douglas (23) an articled clerk (solicitor)/BA, Malcolm (18) an engineer, and Kenneth (10) and Violet (8). Thetr were five female live-in staff; a domestic nurse, cook, parlourmaid, housemaid and kitchenmaid.
None of the family has been traced on the 1911 Census. However, when Bernard's father died on 9 July 1928 he was still living at Ellenborough House in The Park. His widow, Marie Elizabeth, moved to the Old Mill House, Bleasby, Nottinghamshire, and was living there when she died on 3 May 1932.
Bernard's younger brother, Malcolm, was a pupil with the Midland Railway (Derby) from 1 October 1900, leaving the Midland Railway on 19 May 1904. He went to Canada in 1910 where he worked as an engineer. He attested in the 30th Battalion Canadian Expeditionary Force in March 1915 (New Westminster, British Columbia), transferring to the 47th Battalion which came to England at the end of 1915. Malcolm was then commissioned in the Army Service Corps and subsequently had a chequered military career, serving in Egypt, Palestine and Salonika, with over half-a-dozen spells in hospital and facing two courts martial for drunkenness and being absent without leave. Nevertheless, he was promoted lieutenant. Malcolm returned to England in June 1919 and after demobilization returned to Canada in August the same year. He continued to live in British Columbia (Probate: 'of Vancouver and Savary Island'); he died at sea on 31 August 1935.
The youngest brother, Kenneth Yorke, was a hosiery manufacturer; in 1932 he was the managing director of Messrs F Johnson, Reed Mills, Mansfield. He died on 2 February 1941; at the time of his death he was living at Cockliffe, Arnold, Nottingham.
The eldest boy, Douglas, was a solicitor with the family firm of Maples and McCraith. He married Phyllis Marguerite Lynam in the Chapel Royal, The Savoy, on 15 September 1915, Bernard was the best man. Douglas and Phyllis had they had two sons, Patrick James Danvers (b. 21 June 1916) and Anthony D'Ewes (b. 6 April 1918). He was knighted in 1939. He died on 16 September 1952, his home address was then Holme Lodge, Bingham, Nottinghamshire. His wife survived him.
Violet Muriel was unmarried and living with her mother in Bleasby when Lady McCrieth died in 1932.