On 9 July 1745, Du Teillay was involved in a naval engagement with the Royal Navy before sailing to Amsterdam.

They were joined by a French escort ship the Elizabeth on the island of Belle-Ile of the south-west coast of Brittany, but not until 13 July 1745 (New Style date).

A few days later, they were intercepted by the Lion, commanded by Captain Piercy Brett off the West coast of Brittany, south of Cape Lizard.

By 20:00, The Lion, with her mizzen top and topmast shot away and hanging over the side, was still in close action with the Elizabeth.

On 23 July 1745 (Old Style), i.e. 2 August 1745 (New Style), the Du Teillay arrived at Eriskay in the Outer Hebrides with his 'seven men of Moidart', before sailing onto Loch nan Uamh where Charles landed two days later at Borrodale to meet the Laird Angus McDonald of Clanranald.