Here is a sketch of New street in 1817 from the short-lived publication The Birmingham Inspector, which only lasted 8 months. The impressive building in the centre is the original Theatre Royal. To the right of it is Portugal House, This was originally the home of Joseph Green, a merchant, who was made bankrupt in 1799. It seems to have been a linen warehouse for a while, but by at least 1807 it was the establishment of Mrs Thomas , who, from 10.00am till 4.00 pm, took orders for her millinery and Mantuas (apparently an overgown or
robe typically worn over
stays,
stomacher and either a co-ordinating or contrasting
petticoat). According to Wikipedia at this time the article had somewhat fallen out of fashion, though possibly not in Birmingham. The building was put up for sale in 1810 ( perhaps the decline in mantuas had reached Birmingham). For some time it was occupied by Hickin & Dunsford, distillers & spirit merchants, but it may have been used as an auction site, as in 1822 there was a sale there of the belongings of Lucien Buonaparte, the younger brother of Napoleon. He had some disagreements with his brother, and spent about four years in England till 1814, living for a time in Ludlow.
In 1823 it became a wine merchants under S.A.Wheeler. The wine side was pushed at first, but later he seemed to concentrate more on distilling, presumably gin. The premises, both house and distillery were sold in 1830. Later the building became the New royal Hotel