On 5 September 1914, he marriedMona Stapleton, 11th Baroness Beaumont. He and his wife were one of the few couples who both held noble titles in their own right. They had eight children, all of whom were given names beginning with M:[1]
Lady Mariegold Magdalane Fitzalan-Howard (1919–2006), married Gerald James "Jerrie" Jamieson, Esq. (son ofSir Archibald Jamieson) and had issue
Lord Martin Fitzalan-Howard (1922–2003), married Bridget Anne Keppel and had issue
Lady Miriam Fitzalan-Howard (1924–1996), married Lt-Cdr Peregrine Hubbard and had issue. Their granddaughter is actressGabriella Wilde. Lady Miriam foundedMoreton Hall prep school in 1962.
Lady Miranda Fitzalan-Howard (1927-2018[2]), married Hon. Christopher Emmett (son of theBaroness Emmet of Amberley).
Lady Mirabel Fitzalan-Howard (1931–2008), married Bernard Noel David George Terrence Kelly (son of diplomatSir David Victor Kelly) and had issue.[3]
Lord Mark Fitzalan-Howard (born 1934), married Jacynth Lindsay, daughter ofSir Martin Lindsay, 1st Baronet, has two daughters.
In 1924, Fitzalan-Howard inherited his father's barony. He washeir presumptive from 17 May 1962[4] to his cousin the16th Duke of Norfolk, but predeceased him by just over two years. As is customary, when his eldest son, Miles, inherited the dukedom in 1975,Queen Elizabeth II issued aroyal warrant of precedence granting his younger children the style and precedence that they would have had if their father had survived long enough to have inherited it.[5]
^The 1st Viscount Fitzalan of Derwent, born Lord Edmund Fitzalan-Howard, and later known since 1876 as Lord Edmund Talbot, was heir presumptive to his elder brother the 15th Duke of Norfolk from 1860 (the death of their father) to 7 September 1879 (the birth of the 15th Duke's son Philip, and again from 8 July 1902 (the death of Philip) to 1908 (the birth of his younger but only surviving sonBernard Fitzalan-Howard, 16th Duke of Norfolk. Lord Fitzalan of Derwent became heir presumptive again to his nephew from 1917 (the death of his brother the 15th Duke) until his own death in 1947. He was given his viscountcy in 1921.At his death, the position of heir presumptive then passed to Lord Fitzalan of Derwent's only sonthe 2nd Viscount (1883–1962) who died without male heirs himself in 1962. At that point, the 3rd Baron Howard of Glossop became heir presumptive, and so remained until his death in 1972. The 3rd Baron Howard of Glossop and the 16th Duke's mother were first cousins, and descendants of the 1st Baron Howard of Glossop, so the heirs were closely related.