 Born at Langport, Somerset, in July 1919, Lodwidge was the daughter of Dr William Charrott Lodwidge MRCS LRCP, medical officer of health to the Langport Rural District Council, who at the end of the First World War had retired as a Captain from the Royal Army Medical Corps.Originally from Basingstoke, her father's first wife had died in 1917; in 1918 he had married secondly, in France, Louise Elise Marie Kermaree (1894–1977), known as Lisette.Dr Lodwidge, born in 1864, was thirty years older than his second wife.