He was the eighth of Ralph's many children by his second wife, Dora Cleopatra Maria Lorenza de Orellana.
"Leone" repeats a pattern seen in the names of his elder brothers and sisters (Lyonel, Lyonesse, Lyulph, Lyona, Leo, Lyonella and Lyonetta).
His first five initials, "LSD OF", may include a reference to the divisions of the pre-decimal British currency, £sd, for pounds, shillings, and pence followed by half-pence (ob., "obol") and farthings (i.e., quarter-pence).
Their son, Denys Herbert George, was born on 12 January 1915 in White House in Acomb; Kathleen died in childbirth.
[6] Leone's elder brother Leo (Quintus Tollemache-Tollemache de Orellana Plantagenet) also served in France, in the 1st Battalion of the Lincolnshire Regiment.