Johannah "Jay" Deakin (born Johannah Poulston) was a midwife, and Louis and Lottie Tomlinson's mother. Like Anne Twist, she maintained a public persona, regularly interacting with fans on Twitter. She appeared in One Direction's concert film This Is Us, along with other family of the band.

Johannah ed away on 7 December 2016, after a battle with leukaemia.

Johanna worked as a midwife and as an assistant on the set of ITV's Fat Friends. On December 24, 1991, when she was 18, Johannah gave birth to Louis Tomlinson. His biological father was Troy Austin, who ended his relationship with Johannah ten days after Louis was born. Louis considered Mark Tomlinson, Johannah's second husband, to be his father, hence his taking Mark's last name. Tomlinson and Austin have clashed numerous times over Austin's repeated liaising with tabloid media, upon Louis becoming famous.

Johannah and Mark had four children - Charlotte "Lottie" Tomlinson, Felícité Tomlinson and twins Phoebe and Daisy. Johannah split from Mark Tomlinson in 2011. In 2013, Johannah announced her engagement to doctor Dan Deakin, and that they were expecting twins. They were married in July 2014, at a wedding attended by Harry Styles, Liam Payne, Niall Horan and various of their families, as well as Louis's then-girlfriend Eleanor Calder and One Direction stylist Lou Teasdale. Zayn did not attend the wedding, for unknown reasons. On February 10 2014, Johannah gave birth to her second set of twins, Ernest and Doris.

She would regularly speak to fans on social media about Louis, revealing previously unknown facts and photos from his childhood, and sharing stories of his extensive charity work. In 2015, Louis and Johannah staged the Believe In Magic Cinderella Ball, and, along with Liam Payne, helped raise over 2 million pounds for the charity.

On December 9 2016, Johannah's husband Dan released a statement confirming her ing on December 7.