He married Archduchess Maria Henrietta, daughter of Archduke Friedrich who was the Supreme Commander of the Austro-Hungarian army during World War I, on 3 June 1908 in Baden bei Wien.

On 2 February 1913, Emperor Franz Joseph I entrusted Prince Hohenlohe-Schillingsfürst with a special mission to St. Petersburg designed to alleviate the strained relations arising out of the Balkan crisis in the winter of 1912–1913.

In April 1914, he re-entered the diplomatic corps while his wife had to renounce her title 'Her Imperial and Royal Highness'.

[1] On 4 August 1914, Emperor Franz Joseph I appointed Prince Hohenlohe-Schillingsfürst as ambassador of the Dual Monarchy at Berlin, replacing the ageing and decrepit Count von Szögyény-Marich, an appointment that had been discussed long before the advent of war but blocked by the latter's refusal to make a graceful exit.

[3] Following the end of the war, Prince Hohenlohe-Schillingsfürst retired from public service and devoted his remaining years to horse racing.