Cosmas the Priest, also known as Cosmas the Presbyter or Presbyter Cosmas, was a medieval Bulgarian priest and writer. Cosmas is most famous for his anti-Bogomil treatise Sermon Against the Heretics, which, despite not being conclusively dated, is generally ascribed to the 10th century. The treatise is a valuable source on the beginnings of the Bogomil heresy in Bulgaria, as well as on medieval Bulgarian society.
Cosmo Hamilton, born Henry Charles Hamilton Gibbs, was an English playwright and novelist. He was the brother of writers Arthur Hamilton Gibbs, Francis William Hamilton Gibbs, Helen Katherine Hamilton Gibbs and Sir Philip Gibbs.
Lorenzo Annibale Costantino Nigra, Count of Villa Castelnuovo, was an Italian nobleman, philologist, poet, diplomat, and politician. Among his several positions he held and political and foreign affairs in which he was involved in the Kingdom of Piedmont-Sardinia and Kingdom of Italy, he served as ambassador and was later appointed a member of the Senate of the Kingdom of Italy.
Costanza d'Avalos Piccolomini was a duchess of Amalfi. A lady of great worth, she cultivated Italian poetry with great success. Charles V gave her the title of princess, as a mark of his esteem. Her poems have been published several times with those of Victoria Colonna, her cousin; there are several of her pieces also in the collection by Ludovico Domenichi.
Costas Lapavitsas is a professor of economics at the School of Oriental and African Studies, University of London and was elected as a member of the Hellenic Parliament for the left-wing Syriza party in the January 2015 general election. He subsequently defected to the Popular Unity in August 2015.
Cottie Arthur Burland was a British writer and researcher. He studied at the Regent Street Polytechnic, graduated from the University of Westminster, and spent much of his forty-year career spanning from 1925 to 1965, in the Department of Ethnography at the British Museum in London. In 1950 he became honorary curator for the Abbey Art Centre Museum in Hertfordshire. He briefly served in the Royal Air Force during World War II.
Cotton Mather was a New England Puritan clergyman and writer. Educated at Harvard College, in 1685 he joined his father Increase as minister of the Congregationalist Old North Meeting House of Boston, where he continued to preach for the rest of his life.
