Field Marshal Henry William Paget, 1st Marquess of Anglesey,  (17 May 1768 - 29 April 1854), styled Lord Paget between 1784 and 1812 and known as the Earl of Uxbridge between 1812 and 1815, was a British Army officer and politician. After serving as a Member of Parliament for Carnarvon and then for Milborne Port, he took part in the Flanders Campaign and then commanded the cavalry for Sir John Moore's army in Spain during the Peninsular War; his cavalry showed distinct superiority over their French counterparts at the Battle of Sahagun, where his men captured two French lieutenant colonels and so mauled the French chasseurs that they ceased to exist as a viable regiment. He also commanded the cavalry at the Battle of Benavente, where he defeated the elite chasseurs of the French Imperial Guard.

Paget's support of the proceedings against Queen Caroline, alleging her infidelity, made him for a time unpopular, and when he was on one occasion beset by a crowd, who compelled him to shout "The Queen!", he added the wish, "May all your wives be like her". At the coronation of George IV in July 1821, Paget acted as Lord High Steward of England. He was also given the additional honour of captain of Cowes Castle on 25 March 1826. In April 1827, he became a member of the Canningite Government, taking the post of Master-General of the Ordnance. Under the Wellington ministry, he accepted the appointment of Lord Lieutenant of Ireland in February 1828.  In December 1828, Paget addressed a letter to the Roman Catholic primate of Ireland stating his belief in the need for Catholic emancipation, which led to his recall by the government; on the formation of Earl Grey's administration in November 1830, he again became lord-lieutenant of Ireland. In this capacity he introduced state-aided education for 400,000 children. In July 1833, the ministry resigned over the Irish question. Paget spent the following thirteen years out of office, then joined Lord John Russell's administration as Master-General of the Ordnance in July 1846. He was promoted to field-marshal on 9 November 1846 and, having been appointed Lord Lieutenant of Staffordshire on 31 January 1849, he finally retired from the Government in March 1852.  Paget also served as honorary colonel of the 7th Light Dragoons and later of the Royal Horse Guards. He died of a stroke at Uxbridge House in Burlington Gardens on 29 April 1854 and was buried at Lichfield Cathedral, where a monument is erected to his honour. He was succeeded by his eldest son from his first marriage, Henry. Answer this question using a quote from the following article:

what did he do as the lieutenant?
Paget addressed a letter to the Roman Catholic primate of Ireland stating his belief in the need for Catholic emancipation,