Although he did not take active part in the Liberal Revolution that broke out in Porto in 1820, he contributed with two patriotic verses, the "Hymno Constitucional" and the "Hymno Patriótico", which his friends copied and distributed in the streets of Porto. After the "Vilafrancada", a reactionary coup d'état led by the Infante Dom Miguel in 1823, he was forced to seek exile in England. He had just married the beautiful Luísa Cândida Midosi who was only 12 or 13 years old at the time and was the sister of his friend Luís Frederico Midosi, later married to Maria Teresa Achemon, both related to theatre and children of José Midosi (son of an Italian father and an Irish mother) and wife Ana Cândida de Ataíde Lobo. While in England, in Edgbaston, Warwickshire, he began his association with Romanticism, being subject to the first-hand influences of William Shakespeare and Walter Scott, as well as to that of Gothic aesthetics. In the beginning of 1825, Garrett left for France where he wrote "Camões" (1825) and "Dona Branca" (1826), poems that are usually considered the first Romantic works in Portuguese literature. In 1826, he returned to Portugal, where he settled for two years and founded the newspapers "O Portuguez" and "O Chronista". In 1828, under the rule of King Miguel of Portugal, he was again forced to settle in England, publishing Adozinda and performing his tragedy "Catão" at the Theatre Royal in Plymouth.