sentences:  The company existed until 1933, and, in its heyday, was considered one of the greatest names in the British motorcycle industry.Originally, "Rex Motorcycles" was founded in Birmingham by brothers William and Harold Williamson in 1899, merged with Allard, a Coventry bicycle maker, in 1902, the name remaining Rex.They enlarged the factory, and produced a range of three and four wheel cars (and their first motorcycle).