Shield was born in
Swalwell near
Gateshead, County Durham, the son of William Shield and his wife, Mary, née Cash. He was first taught music by his father but, after both he and his mother died while Shield was still a child, he was apprenticed to a shipbuilder in
South Shields, continuing however to study music with
Charles Avison in
Newcastle upon Tyne. He became a noted violinist in Newcastle's subscription concerts before moving to
Scarborough to lead a theatre orchestra. In 1772, he was appointed by
Felice Giardini to play violin in the opera at
Covent Garden (now the
Royal Opera House), and from 1773 he was principal
violist there. In 1778 he provided the music for the comic opera
The Flitch of Bacon to a
libretto by
Henry Bate. On 21 February 1776 he was in Durham, where he attended the meeting of the city's masonic lodge at the
Marquis of Granby tavern. The lodge Minutes indicate that he was by this date already a member of the ''St. John's
lodge in Newcastle. He later also became a member of the Sunderland Phoenix'' lodge No.94 and The Sea Captain's Lodge (later to become
Palatine Lodge No.97), where he was admitted as a joining member on 14 June 1792. Details of the frequency of Shield's attendance at these north-east lodges is not yet clear, but can only have been occasional, given his career in London. Shield also worked as a composer for Covent Garden and, in that capacity, he met
Joseph Haydn. In 1817, he was appointed
Master of the King's Musick. Like Haydn and Beethoven, not to mention several other composers of his time, Shield was a great plunderer of folk tunes (in his case mostly from his native
Northumbria). Shield's compositions include a large number of operas and other stage works. These included one on
Robin Hood (1784), text by
Macnally, as well as instrumental music, but he is principally known for his English light opera
Rosina (1781). It was intended to be used as a light afterpiece to a more "serious" work sung in Italian. Such works were common at the time, although
Rosina is the only one that has survived in the form of a complete score.
Rosina has a number of features associated with later English
comic opera, and even modern
musical comedy – including the use of English, spoken dialogue, lightness of theme, and the use of folk and popular medodies. At least to that degree, it may be regarded as one of the ancestors of the musical, and Shield as one of the first composers of musicals. ==Death and subsequent historical problems==