Macao Expedition
The British Ministry under Lord Minto sent the 1809 expedition to defend Portuguese colonial interests at Macao (Macau)[1], against the French after Napoleon occupied Portugal. Seeing it as disrespectful, the Chinese objected and stopped trading with the East India Company, so the British withdrew and returned to India.
Thomas Mathius Weguelin [2] led the expedition. He participated in the Battle of Mauritius 1810-12, the defence of another Portugese interest, serving as the Commissariat General.