Oliver Remigius, Count von Wallis, Baron von Carrighmain, (1 October 1742 – 19 July 1799) the scion of the distinguished Irish Walsh family in Habsburg military service, served in Austria's wars with the Ottoman Empire (1787–1791), and in the French Revolutionary Wars (1791–1800).
Oliver Remigius was born on 1 October 1742 into an Irish exiled family living in the Habsburg Empire.
[1] One ancestor, Richard Walsh or "Wallis", as he had been known in Ireland, emigrated with his family in 1612, and became a colonel in the Habsburg military.
Another ancestor of Oliver Remigius, George Olivier, Count von Wallis, son of Richard, also served in the Habsburg military during the Thirty Years War under Wallenstein.
On 22 November, he assumed command of the Army of Lombardy from Joseph Nikolaus De Vins, on the eve of the Battle of Loano.
He led the third column in its assault on the French positions in the Habsburr victory over General of Division Jordan's Army of the Danube at the Battle of Ostrach on 21 March.
From 14 to 25 April, while Archduke Charles was indisposed, Wallis assumed command of the main Habsburg army quartered on the shore of the Rhine River.