Lowe married, in 1895, Frances Broster Johnson (née de Salvo; 1857-1942), the widow of Captain Robert Harry Johnson of the 64th Foot Regiment and daughter of Emma Broster, an Englishwoman and Francesco de Salvo, of Palermo, Sicily. His wife already had three children from her first marriage: Harry Cecil Johnson (1877-1915), Dorothy Johnson (1880-1971) and Gladys Frances McGrath (née Johnson; formerly Kingsmill; 1881-?). Together they had a son John (1898-1988), and a daughter Elizabeth (1900-?), who became a nun. Their son, John, was a British Army officer who with his father also took part in the suppression of the Rising and accepting the surrender of Pearse —fought at Gallipoli and the Somme and subsequently became a Hollywood actor under the screen name John Loder. General Lowe died in London on 7 February 1944, aged 82. Neither an otherwise comprehensive obituary in "The Times" nor an entry in "Who Was Who" 1941–1950 made reference to his role in the Easter Rising, although it is mentioned in John Loder's autobiography, and there is a photograph of Pearse surrendering to him.