Louis was born in Doncaster, South Yorkshire, England to Troy and Johanna Austin. Troy and Johanna split up when Louis was a young child. When his mother remarried, Louis took on his stepdad Mark Tomlinson's name, Louis William Tomlinson. Louis has four younger half-sisters by his mom; Charlotte, Félicité, and twins Daisy and Phoebe. He has one younger half-sister by his father, Georgia. Mark and Jay divorced in 2011. He was a sixth form student at Hall Cross School, a state comprehensive school and previously a pupil at The Hayfeild School. While he was a student at Hall Cross, Louis starred in several school musical productions such as Grease.