Short answers, pulled from the story.
The earliest recorded form of Brighton's name is Bristelmestune, written down in the Domesday Book of 1086. Most scholars believe it derives from the Anglo-Saxon Beorthelm plus tun, meaning the homestead of Beorthelm. The shortened form Brighton first appeared in 1660 but did not become the official name until 1810.
Brighton's rise as a resort was driven by the fashionable belief that drinking and bathing in seawater could cure illness, promoted by physician Richard Russell from nearby Lewes from the 1730s onward. The main road to London via Crawley was turnpiked in 1770, easing travel, and the Prince Regent's first visit in 1783 and his subsequent construction of the Royal Pavilion gave the town fashionable cachet.
Brighton and Hove was granted city status by Queen Elizabeth II in 2000 as part of the millennium celebrations. The town of Brighton and its neighbour Hove had been joined to form the unitary authority of Brighton and Hove in 1997.
The Royal Pavilion is a Grade I listed former royal palace built for the Prince Regent, later King George IV, during the early 19th century under the direction of architect John Nash. It is notable for its Indo-Saracenic architecture and Oriental interior and is now open to the public as a museum of the British Regency.
Brighton hosted the 19th Eurovision Song Contest on the 6th of April 1974. ABBA won the contest at the Brighton Dome with their song Waterloo, a performance widely credited with launching the group's international career.
Brighton has the highest proportion of LGBTQ+ residents of any UK city. The 2021 census recorded that 11 per cent of Brighton and Hove residents identified as lesbian, gay, or bisexual, against a national average of 3 per cent. The city also recorded the highest percentage of same-sex households in the UK in 2004, and Brighton Trans Pride, founded in 2013, is the first and largest event of its kind in the UK.