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Born 15 June 1990, Conall Wilson, who later changed his name to Conall Lethbridge-Stewart, was the son of Albert and Tamara Wilson, and elder brother of Nick and Lucy. (PROSE: The Enfolded Time) He was not the first Conall Lethbridge-Stewart, as his great-great-great-great-grandfather also bore the name. (PROSE: The Note)


He was the second eldest grandson of Alistair Lethbridge-Stewart, being several months older than his cousin Gordon Lethbridge-Stewart, who was born in September 1990. (PROSE: The Enfolded Time, HOMEVID: Downtime) Alistair was present at his birth. (PROSE: Scary Monsters)

Conall and Nick always behaved when their grandfather looked after them as children. (PROSE: Lucy Wilson and the Bledoe Cadets)

The first person Conall came out to as gay was his cousin, Gordon. This didn't phase him, and as a result Conall came out to his friends at school, supported by Gordon. By 2004, Conall was in his first relationship with a boy, Gordon's best friend, Gabe Chase. His mum was the first person in his family to realise Conall was gay when she spotted him kiss Gabe during a bowling match at Gordon's fourteenth birthday party. She wasn't really worried, and told Kate that if it wasn't a phase, then as long as he was happy, she was okay with it. But Tamara suspected Conall's dad might not be. (PROSE: Downtime: Child of the New World)

On 2 June 2005, Conall returned home from school to find his mother had given birth to Lucy Wilson. (PROSE: The Midwife and the Alien)

He was especially close to his grandfather, and would spend hours listening to Lethbridge-Stewart's stories of aliens. (PROSE: The Two Brigadiers) Over time this bond drew a wedge between Conall and his father, Albert. (PROSE: Lucy Wilson)

In 2010, Gordon allowed Conall to bunk up with him over the summer while Conall did some lawyering work with his lecturer. (PROSE: 8.46)

In 2011, Conall bought his grandfather an iPhone. (PROSE: Lucy Wilson and the Bledoe Cadets)

He was closer to Lucy than he was to Nick, and often shared the stories he'd been told. He met Dean Howard at university in 2011, and the two began dating. He was openly gay in Uni, and his mother knew, but his father did not. He visited his grandfather in November, after meeting the Doctor briefly, and passed on a photograph of her to his grandfather. It was during that visit that he revealed his sexuality to him. His grandfather was not in the least bothered, as long as Conall was happy.

In December he finally changed his surname to Lethbridge-Stewart, embracing his true heritage, despite his father's objections. He wished to tell his grandfather the news, but was informed of his death by Kate Stewart before he got the chance. (PROSE: Acceptance, and then Understanding)

On Saturday 12 January 2012, Conall attended his grandfather's funeral, where he went to talk to a blonde woman in a long grey coat, and a top with rainbow stripes. (PROSE: Lucy Wilson and the Bledoe Cadets)

By November 2017, he was a lawyer living in London, and was married to Dean Howard. The two had an adopted daughter, Hannah. Conall remained in London while his parents and sister moved to Ogmore-by-Sea, Wales. (PROSE: Avatars of the Intelligence) Conall, Dean and Hannah visited his family in Ogmore for Christmas 2017. (PROSE: The Christmas Cracker Conundrum!)

Conall attended several protest marches about Brexit with his brother Nick, and his cousins, Gordon and Kadiatu Lethbridge-Stewart, in early 2018. (PROSE: Lucy Wilson and the Bledoe Cadets)

During the Easter holidays of 2019, Lucy and Hobo visited Conall, Dean and Hannah in London. Lucy and Hobo decided to attend the climate change protests at Waterloo Bridge, and although Conall did not go with them, he fully supported them, once again just missing an alien encounter. (PROSE: The Llanfairfach Rebellion)

During the COVID-19 crisis of 2020, Conall was furloughed while Dean got a temporary job in at Tesco Extra. Conall and Lucy spoke a lot during this time, and he told her that he and Dean were thinking of moving to Cardiff once the lockdown was over, to be nearer to his family. (PROSE: The Invasion of London)