Helen Dawlish was a Ravenclaw student at Hogwarts School of Witchcraft and Wizardry in the late 1990s. She was a fan of Gilderoy Lockhart, and spent the summer of 1996 reading his books, of which Magical Me was her favourite. After returning to school for the 1996–1997 school year, she ran a Duelling Club in the Transfiguration Courtyard, which also included Shoma Ichikawa and Rhonda Fladbury. She offered sloth brains as a reward to everyone who beat her in a duel.
John Dawlish is an Auror who worked at the Ministry of Magic under Cornelius Fudge, Rufus Scrimgeour and Pius Thicknesse. Albus Dumbledore referred to Dawlish as being an excellent Auror, having achieved Outstanding in all of his Nastily Exhausting Wizarding Tests, but Dawlish nearly always ends up incapacitated in some way. Nevertheless, he at one point was the personal bodyguard to Fudge, the Minister for Magic. After Rufus Scrimgeour became the Minister, Dawlish was assigned with the job of following Albus Dumbledore while he left Hogwarts School of Witchcraft and Wizardry. Each time, Dumbledore jinxed Dawlish. Also, when Neville Longbottom was rebelling against the Carrows, they sent Dawlish after Neville's grandmother, Augusta Longbottom, and he ended up in St. Mungo's and Neville's grandmother went into hiding.