Title: Henry Purcell
Content:  Henry Purcell (c. 10 September 1659 – 21 November 1695) was an English composer. Although it incorporated Italian and French stylistic elements, Purcell's was a uniquely English form of Baroque music. He is generally considered to be one of the greatest English composers; no later native-born English composer approached his fame until Edward Elgar, Ralph Vaughan Williams, Gustav Holst, William Walton and Benjamin Britten in the 20th century.
Title: List of English Baroque composers
Content:  Nicholas Lanier (1588–1666) ; Henry Lawes (1595–1662) ; William Lawes (1602–1645) ; Matthew Locke (1621–1677) ; Thomas Mace (c. 1613–1709?) ; Richard Mico (1590–1661) ; Johann Christoph Pepusch (1667–1752) ; John Playford (1623–1686/7) ; Daniel Purcell (1664–1717) ; Henry Purcell (1659–1695) ; John Ravenscroft (c. 1650?–1708) ; Thomas Roseingrave (1688–1766) ; Christopher Simpson (c. 1602/1606–1669) ; Thomas Tudway (c. 1656–1726) ; William Turner (1651–1740) ; Robert Valentine (c. 1671–1747) ; William Webb (c. 1600–after 1656) ; John Weldon (1676–1736) ; John Wilson (1595–1674) ; Michael Wise (1647–1687) ; Robert Woodcock (c. 1690–1728) This is a list of English composers from the Baroque period in alphabetical order: 
Title: List of English Baroque composers
Content: Charles Avison (1709–1770) ; John Banister (c. 1624/1630–1679) ; John Baston (fl. 1708–1739) ; John Blow (1649–1708) ; William Boyce (1711-1779) ; Thomas Brewer (1611–c. 1660) ; Albertus Bryne (1621–1668) ; William Child (1606–1697) ; Jeremiah Clarke (1674–1707) ; Thomas Clayton (1673–1725) ; Henry Cooke (1615–1672) ; William Corbett (1680–1748) ; William Croft (1678–1727) ; Giovanni Battista Draghi (c. 1640–1708) ; Henry Eccles (1670–1742) ; John Eccles (1668–1735) ; John Galliard (1687–1749) ; John Gamble (fl. from 1641, died 1687) ; Christopher Gibbons (1615–1676) ; Maurice Greene (1696–1755) ; George Frideric Handel (1685–1759) ; Pelham Humfrey (1647–1674) ; John Jenkins (1592–1678) ; Richard Jones (late 17th century–1744) 
Title: Composer
Content:  small ensembles including strings, brass, and woodwinds, as well as choirs and for keyboard instruments such as pipe organ, harpsichord, and clavichord. During this period, composers developed several major music forms that lasted into later periods when they were expanded and evolved further, including the fugue, the invention, the sonata, and the concerto. The late Baroque style was polyphonically complex and richly ornamented. Some of the best-known composers from the Baroque era include Claudio Monteverdi, Heinrich Schütz, Jean-Baptiste Lully, Dieterich Buxtehude, Arcangelo Corelli, Henry Purcell, François Couperin, Antonio Vivaldi, Georg Philipp Telemann, Jean-Philippe Rameau, Johann Sebastian Bach and George Frideric Handel.
Title: Baroque music
Content:  "baroque" comes from the Portuguese word barroco, meaning "misshapen pearl". Key composers of the Baroque era include Johann Sebastian Bach, Antonio Vivaldi, George Frideric Handel, Claudio Monteverdi, Domenico Scarlatti, Alessandro Scarlatti, Henry Purcell, Georg Philipp Telemann, Jean-Baptiste Lully, Jean-Philippe Rameau, Marc-Antoine Charpentier, Arcangelo Corelli, François Couperin, Giuseppe Tartini, Heinrich Schütz, Jan Pieterszoon Sweelinck, Dieterich Buxtehude, and others. The Baroque period saw the creation of common-practice tonality, an approach to writing music in which a song or piece is written in a particular key; this type of harmony has continued to be used extensively in Western classical and popular music. During the Baroque era, professional 
Title: English Baroque
Content:  English Baroque is a term sometimes used to refer to modes of English architecture that paralleled Baroque architecture in continental Europe between the Great Fire of London (1666) and the Georgian era, when the flamboyant and dramatic qualities of Baroque art were gradually abandoned in favor of the purer, more academically-correct neo-classical forms espoused by the proponents of Palladianism. It is primarily embodied in the works of Christopher Wren, Nicholas Hawksmoor, John Vanbrugh, and James Gibbs, although a handful of lesser architects such as Thomas Archer also produced buildings of significance. In domestic architecture and interior decor, Baroque qualities can sometimes be seen in the late phase of the Restoration style, the William and Mary style, the Queen Anne style, and the early Georgian style.
Title: England
Content:  Old Duke of York, Hey Diddle Diddle and Humpty Dumpty. Traditional English Christmas carols include "We Wish You a Merry Christmas", "The First Noel", “I Saw Three Ships” and "God Rest You Merry, Gentlemen". Early English composers in classical music include Renaissance artists Thomas Tallis and William Byrd, followed up by Henry Purcell from the Baroque period. German-born George Frideric Handel spent most of his composing life in London and became a national icon in Britain, creating some of the most well-known works of classical music, especially his English oratorios, The Messiah, Solomon, Water Music, and Music for the Royal Fireworks. One of his four Coronation 
Title: List of Baroque composers
Content:  Mondonville (1711–1772) ; James Oswald (1711–1769) ; Frederick the Great (1712–1786) ; John Hebden (1712–1765) ; Giacomo Puccini senior (1712-1781) ; Jean-Jacques Rousseau (1712–1778) ; John Christopher Smith (1712–1795) ; John Stanley (1712–1786) ; Antoine Dauvergne (1713–1797) ; Johan Henrik Freithoff (1713–1767) ; Johann Ludwig Krebs (1713–1780) ; Johann Nicolaus Mempel (1713–1747) ; Carl Philipp Emanuel Bach (1714–1788) ; John Alcock (1715–1806) ; Jacques Duphly (1715–1789) ; Josef Seger (1716–1782) ; Princess Philippine Charlotte of Prussia (1716–1801) ; Johann Wenzel Anton Stamitz (1717–1757) ; Richard Mudge (1718–1763) ; Abraham Caceres (1718–1740) ; Leopold Mozart (1719-1787) ; Joan Baptista Pla i 
Title: List of Baroque composers
Content:  Caccini (1551–1618) ; Benedetto Pallavicino (1551–1601) ; Girolamo Belli (1552–1620) ; Edmund Hooper (1553–1621) ; Johannes Eccard (1553–1611) ; Leonhard Lechner (1553–1606) ; Elway Bevin (1554–1638) ; William Inglot (1554–1621) ; Emmanuel Adriaenssen (1554–1604) ; Cosimo Bottegari (1554–1620) ; Girolamo Diruta (1554-after 1610) ; Giovanni Giacomo Gastoldi (1554–1609) ; Giovanni Gabrieli (c. 1554/1557–1612) ; Jacques Champion, Sieur de la Chapelle (before 1555–1642) ; John Mundy (1555–1630) ; Gabriele Villani (1555–1625) ; Manuel Rodrigues Coelho (c. 1555–c. 1635) ; Paolo Quagliati (c. 1555–1628) ; Alonso Lobo (1555–1617) ; Johannes Nucius (c. 1556–1620) ; Thomas Morley (1557–1602) ; Carolus Luython (1557–1620) ; Jacques Mauduit (1557–1627) ; 
Title: Music in the Elizabethan era
Content:  Many composers of the period are still known by name, today. William Byrd (1539–1623) is considered by most modern authorities “the greatest of all the Elizabethan composers." He was the leading composer of religious music. Many of his songs still exist today. William Byrd was the chief organist and composer for Queen Elizabeth. Also during the 16th century were John Bull (1562–1628), best-known organist of the Elizabethan era, and John Dowland (1563–1626), leading composer of lute music. John Dowland published his first book of songs or "ayres" in 1597. It became a bestseller. These composers, among others, would give rise to the English Madrigal School which, while brief, was incredibly popular. A madrigal was the most common form of secular vocal music. “The poetic madrigal is a lyric consisting of one to four strophes of three lines followed by a two-line strophe." The English Madrigals were a cappella, light in style, and generally began as either copies or direct translations of Italian models, with most being for four to six voices. Other composers include Robert Johnson, John Taverner, Thomas Morley, Orlando Gibbons, Thomas Tallis, and John Blitheman.

Question: who is considered to be the greatest english composer of the baroque period?
Answer: Henry Purcell.