He has appeared in several historical books on the circus,[citation needed] including one children's book completely dedicated to him (Elephants at Royal Leamington Spa by Janet Storrie, 1990), and the English town of Leamington Spa has several areas named after his most famous group of elephants "The Three Graces".
The family name was changed to Lockhart on the advice of his mother (source: The Legend of Salt and Sauce, Pre-publication Jamie Clubb, Aardvark Publishing circ.
Sam and his elder brother, George William Lockhart worked as bareback riders, clowns and acrobats.
According to Janet Storrie's children's book "Elephants at Royal Leamington Spa", Sam performed the incredible feat of being shot from a cannon onto a trapeze.
In 1875 George Lockhart fell from his horse and broke his hip (source, Les Histories de Cirque, Jacques Garnier, 1978), which brought their act to an end.
A recent luxury flat development by A C Lloyd that was built after demolishing Sam Lockhart's home at 1, Warwick Road was named Wilhelmina Close after one of the "3 Graces".