• 1: Azure, three cross-crosslets fitchée between two bendlets or (Knatchbull)
• 2: Argent, two pallets sable (Mountbatten)
• 3: Azure, a lion rampant double queued barry of ten argent and gules crowned or a bordure compony of the second and third (Grand Duchy of Hesse, {here shown with one tail only, barry of seven, with bordure gules and argent} with a bordure for difference)
• 4: The Royal Arms differenced with a label of three points argent the centre point charged with a rose gules barbed vert and each of the other points with an ermine spot (Arms of Princess Alice, 3rd(?) daughter of Queen Victoria)

The Battenberg title was first conferred in 1857 on Countess Julia von Hauke, morganatic wife of Prince Alexander of Hesse (d.1888). She was a former lady-in-waiting to his sister. Three of their four children attained high honor as Princes of Battenberg. One, Louis Alexander (b. in 1854) is a British naval officer; another, Alexander Joseph, was from 1879 to 1886 Prince of Bulgaria; while the third, Prince Henry Maurice, in 1885 married Princess Beatrice, youngest child of the late Queen Victoria of Great Britain. (Source:[1])

Princess Alice of the United Kingdom (1843-1878), Grand Duchess of Hesse, was the second daughter of Queen Victoria and Prince Albert. She married the German Prince Louis of Hesse, heir to the Grand Duchy of Hesse. She was the maternal grandmother of Louis Mountbatten, 1st Earl Mountbatten of Burma and maternal great-grandmother of Prince Philip, Duke of Edinburgh (consort of Queen Elizabeth II).

Louis Mountbatten, 1st Earl Mountbatten of Burma was the second son of Prince Louis of Battenberg and his wife Princess Victoria of Hesse. His maternal grandparents were Louis IV, Grand Duke of Hesse, and Princess Alice of the United Kingdom, a daughter of Queen Victoria and Prince Albert of Saxe-Coburg and Gotha. His paternal grandparents were Prince Alexander of Hesse and by Rhine and Julia, Princess of Battenberg.

Mountbatten's paternal grandparents' marriage was morganatic because his grandmother was not of royal lineage; as a result, he and his father were styled "Serene Highness" rather than "Grand Ducal Highness", were not eligible to be titled Princes of Hesse and were given the less exalted Battenberg title.

Arms granted to descendants of Earl Mountbatten of Burma's elder daughter & Based on work of Sodacan:(see The London Gazette: no. 44059. p. 8227. 21 July 1966)

ROYAL LICENCE, Whitehall, London SW1, 30th June 1966:

The QUEEN has been graciously pleased to give and grant unto Louis Francis Albert Victor Nicholas (Mountbatten), Earl Mountbatten of Burma, K.G., G.C.B., O.M., G.C.S.I., G.C.I.E., G.C.V.O., D.S.O., P.C., Admiral of the Fleet, Her Majesty's Royal Licence and Authority that every person being a descendant of his elder daughter and coheir presumptive Patricia Edwina Victoria wife of John Ulick (Knatchbull) Baron Brabourne upon whom the title and dignity of Earl Mountbatten of Burma may descend by virtue of His Majesty's Letters Patent of Creation bearing date the 18th day of October 1947 may bear and use in lieu of and in substitution for his own paternal Arms, Crests and Supporters, the Arms of Knatchbull quarterly with the Arms of Mountbatten, the Arms of the Grand Duchy of Hesse and the Arms of Princess Alice Maud Mary, Grand Duchess of Hesse and the Rhine together with the Crests of Knatchbull, of Mountbatten and of the Grand Duchy of Hesse and the Supporters of Viscount Mountbatten of Burma, of Romsey in the County of Southampton, the whole with due and proper differences according to the Laws of Arms, the said Arms, Crests and Supporters being first duly exemplified according to the Laws of Arms and recorded in Her Majesty's College of Arms: otherwise the said Royal Licence and Permission to be void and of none effect. And to command that the said Royal Concession and Declaration be recorded in the said College of Arms.