Prince Andrew married Her Serene Highness Princess Alice of Battenberg in a civil wedding on October 6, 1903 at Darmstadt and in a religious wedding the next day in the Russian Chapel, Darmstadt. Princess Alice was a daughter of Their Serene Highnesses, Prince and Princess Louis of Battenberg. As such Princess Alice was a great grand-daughter of Queen Victoria and in the line of succession to the British throne.
Their children were:
Alice became a Greek Orthodox nun in 1944 following her husband’s death. She suffered a nervous breakdown and was institutionalized in Switzerland, emerged and founded (in 1949) the Christian Sisterhood of Martha and Mary, an order of nuns tending the poor and sick on the island of Tinos in Greece. She sheltered Jewish families in Greece and was posthumously honored for heroism by Israel.