On 4 January 1866, Ernest Mangnall, who managed Manchester United to their first two titles, was born in Bolton. He also later managed Manchester City.
After an amateur career as a goalkeeper for Bolton, Mangnall moved into management with Burnley, starting in 1900. The club had been relegated into the Second Division at the end of the previous season and Mangnall narrowly missed out on getting them back into the top flight, delivering a third-place finish in his first season, four points away from the last promotion spot. But two seasons later, they ended dead last in the division and had to be re-elected to the league.
In October 1903, Mangnall left Burnley for Manchester United. They were in the Second Division at the time, but he guided them to a second-place finish in 1906 and promotion to the First Division. He led them to their first league title in 1908, the FA Cup in 1909, then to a second league title in 1911.
He moved to Manchester City in September 1912, after losing to them in his last match in charge of United, and remained there until his retirement in 1924.