Henniker-Hughan was the second son of Sir Brydges Henniker Bt. (of Newton Hall in
Essex) and Louisa Hughan of Airds House,
Parton,
Galloway. As he was the second son, and not expected to inherit, he was bequeathed the Hughan family estates in Galloway by his maternal grandfather (
Thomas Hughan). He inherited following the death of his aunt in 1896, at which point he took the second surname Hughan. Following the sudden and unexpected death of his brother, Colonel Sir Frederick Henniker, in late 1908 he succeeded to the Henniker baronetcy as well (as the sixth Baronet), but continued to live at Airds in Galloway. He married Inger Hutchison of Balmaghie (Galloway) in January 1904, and the couple had three daughters, Beryl, Rhona and Alison (Sally). He died of pneumonia on 4 October 1925 at a nursing home in London, aged 59. As he left no male heir the Henniker baronetcy passed on his death to distant cousin, Sir Robert Henniker. ==Naval career==