Sadleir, John (sometimes Sadlier, John) (1814-1856), politician and embezzler. Born in Co. Tipperary and educated at Clongowes, he became an agent for the railways and MP for Carlow and for Sligo in 1847 and 1853. With George Henry Moore (George Moore's father), William Keogh, and others he founded the Catholic Defence Association, also known as ‘the Pope's Brass Band’. Sadleir embezzled large sums from Irish and English concerns before committing suicide by poison on Hampstead Heath.




