After the death of his first wife, Leonard married Rosalind Bruce, and had two further sons. The elder of these was David Bruce Huxley (1915–1992), whose daughter Angela married George Pember Darwin, son of the physicist Charles Galton Darwin. The younger was the 1963 Nobel Prize-winning physiologist Andrew Huxley (1917–2012).
After the death of his first wife, Leonard married Rosalind Bruce and had two further sons. The elder of these was Dav,id Bruce Huxley (1915–1992), whose daughter Angela married George Pember Darwin, son of the physicist Charles Galton Darwin. The younger was the 1963 Nobel Prize-winning physiologist Andrew Huxley (1917–2012).