In 1801, before being appointed to the garrison in Dublin, Asgill found himself defending the right of Henry Ellis (in the neighbourhood of Kilkenny) to be properly remunerated for the invaluable intelligence he had provided during the rebellion. His information had made a significant contribution to the suppression of the rebels, but he paid a severe price for his loyalty after the fighting was over. His neighbours persecuted him; tried to kill him; and ruined his business as a miller. The British were very slow to pay his annuity of £30 per annum for life. Sir Charles Asgill and Lord Castlereagh took up his cause (with a Mr A. Marsden) to see that he was properly compensated.
