He was s of Sir Harold Esmond Arnison BOLDERO 1889-1960 and Margery Florence c1895-1950 d of Arthur Tempest Blakiston DUNN 1860-1902 of Ludgrove by his 29 Dec 1892 m (Christ Church, Barnet) to Helen Matilda 1867-1949 d of George Forbes MALCOLMSON 1840-1923 sometime head of that gentry family of Icomb Place and Catherine Annesley GODWIN-AUSTEN 1847-1943 scion of that gentry family of Pirbright Manor. He m 1956 Edwina b 1933 d of Maj Norman Edwin BARTLETT 1888-1972 (s of Sir Herbert Henry BARTLETT 1st Bt 1842-1921) and his 2nd w Sheila BARTON 1904-93, and had a son and two daus as above.