Shelley (Percy Bysshe), English poet, b. Field Place (Sussex), 4 Aug. 1792. From Eton, where he refused to fag, he went to Oxford. Here he published a pamphlet on the necessity of Atheism, for which he was expelled from the University. His father, Sir Timothy Shelley, also forbade him his house. He went to London, wrote Queen Mab, and met Miss Westbrook, whom, in 1811, he married. After two children had been born, they separated. In '16 Shelley learned that his wife had drowned herself. He now claimed the custody of his children, but, in March, '17, Lord Eldon decided against him, largely on account of his opinions. Shelley had previously written A Letter to Lord Ellenborough, indignantly attacking the sentence the judge passed on D. I. Eaton for publishing Paine's Age of Reason. On 30 Dec. '16, Shelley married Mary, daughter of William Godwin and Mary Wollstonecraft. In '18, fearing their son might also be taken from him, he left England never to return. He went to Italy, where he met Byron, composed The Cenci, the Witch of Atlas, Prometheus Unbound, Adonais, Epipsychidion, Hellas, and many minor poems of exquisite beauty, the glory of our literature. He was drowned in the Bay of Spezzia, 8 July, 1822. Shelley never wavered in his Freethought. Trelawny, who knew him well, says he was an Atheist to the last. Siciliani (Pietro), Professor in the University of Bologna b. Galatina, 19 Sep. 1835, author of works on Positive Philosophy, Socialism, Darwinism, and Modern Sociology, '79; and Modern Psychogeny, with a preface by J. Soury, '82. Died 28 Dec. '85. Sidney (Algernon), English Republican, and second son of Robert, Earl of Leicester, b. 1617. He became a colonel in the Army of Parliament, and a member of the House of Commons. On the Restoration he remained abroad till 1677, but being implicated in the Rye House Plot, was condemned by Judge Jeffreys to be executed on Tower Hill, 7 Dec. 1678. Sierebois (P.). See Boissière. Siffle (Alexander François), Dutch writer, b. Middleburg, 11 May, 1801. Studied law at Leyden, and became notary at Middleburg. He wrote several poems and works of literary value, and contributed to de Dageraad. He was a man of wide reading. Died at Middleburg, 7 Oct. 1872. Sigward (M.), b. St. Leger-sur-Dhume, France, 15 April, 1817. An active French democrat and Freethinker, and compiler of a Republican calendar. He took part in the International Congress at Paris '89, and is one of the editors of Le Danton. Simcox (Edith), author of Natural Law in the English and Foreign Philosophical Library; also wrote on the Design Argument in the Fortnightly Review, 1872, under the signature "H. Lawrenny." Simon de Tournai, a Professor at Paris University early in the XIIIth century. He said that "Three seducers," Moses, Jesus, and Muhammad, "have mystified mankind with their doctrines." He was said to have been punished by God for his impiety.