Leonard Jennings was born in Acton, Middlesex [now London], England on 10 November 1877. He studied at Glasgow School of Art; Lambeth School of Art in London; and the Royal Academy Schools in London. In 1904 he was awarded the Landseer Scholarship.

Jennings worked briefly as an assistant to the sculptor Francis Derwent Wood (1871-1926), before being appointed a teacher at Calcutta School of Art in 1907 By 1910 he had returned to England. His address that year was given as 11 Cheyne Gardens, Chelsea, London. The 1911 England and Wales census recorded that he was living as a boarder at 1 Beaufort House, Chelsea, London.

Jennings began exhibiting at the Royal Academy in London in 1905 and continued to do so regularly until 1930. He also exhibited at the New Gallery, Royal Institute of Painters in Water Colours, Royal Society of Portrait Painters, and International Society of Sculptors, Painters and Gravers in London; Walker Art Gallery in Liverpool; Aberdeen Artists' Society; and at the Royal Glasgow Institute of the Fine Arts.

Jennings' work consisted mainly of public statues, portrait sculptures and statuettes in a range of mediums including bronze, marble, silver and wood. He produced a number of equestrian statuettes. Many of his public commissions were for the Indian Imperial Government. These included a marble bust of Nawab Bahadur Abdul Latif (1913-14) for the University Senate House in Calcutta/Kolkata (1914-15); a statue of King Edward VII for Bangalore/Bengaluru; the Thackeray memorial in Calcutta/Kolkata; the Imperial Service Cavalry Brigade memorial in Delhi (1922); and a statue of the Prince of Wales for Bombay/Mumbai (1924). Amongst his last commissions was a plaque for Dr. M. Y. Young for St Mary's Hospital in Paddington, London (1952).

During World War One Jennings served with distinction as a commissioned officer in France and Flanders. He was elected a member of the Royal Society of British Sculptors in 1907.

Between 1910 and 1956 Jennings' address was given as 11 Cheyne Gardens, Chelsea. London. He died in Ipswich, Suffolk on 5 October 1956. His address at the time of his death was The White Horse Inn, Badingham, Suffolk.

_{Text source: Art History Research net (AHR net)}