Arthur Thistlewood was a native of Horncastle, in Lincolnshire, where he was born in the year 1770. His father was land-steward to a most respectable family in the neighbourhood, and maintained through life an unblemished reputation. The subject of this sketch was, early in life, put to school with a view to his being educated as a land-surveyor; but having exhibited a disinclination for business, at the age of twenty-one, through the instrumentality of his friends, he obtained a lieutenancy in the militia, which he subsequently exchanged for a like commission in a marching regiment. He shortly afterwards married a lady possessed, as he supposed, of a fortune of 10,000_l._; but upon his proceeding to make inquiries he found that she was entitled only to a life interest in the money, and that on her decease it would revert to a distant relation. Sixteen months after this marriage, Mrs. Thistlewood died in childbed, and her husband was left without a shilling. He had, however, retained his commission, and at the commencement of the revolutionary war he accompanied his regiment to the West Indies, but he soon gave up his rank, and quitting the army, he proceeded to America. From thence he sailed to France, where he arrived soon after the fall of the tyrant Robespierre; and there he became fully initiated into all the feelings and doctrines of the revolutionists. He afterwards entered the French army, and was present at several battles; and although a person of moderate capacity, he obtained a considerable knowledge of military tactics. He was besides a good swordsman, and possessed undeniable courage. His habitual hatred of oppression, it appears, involved him in many disputes; and it is but justice to say that most of these redound to his credit. After the peace of Amiens, he returned to England, and found himself possessed of a considerable estate, which accrued to him on the death of a relative; but his evil genius still accompanied him. He sold his property to a person at Durham for ten thousand pounds, who becoming a bankrupt before the money was paid, Thistlewood found himself again reduced to comparative poverty.