Joseph Peter Brown is the son of Chesney Brown and Katy Armstrong. Katy gave birth while she was playing Mary in the Christmas nativity at Weatherfield Community Hall. Joseph was the subject of the majority of the couple's arguments. In March 2015, Katy left Weatherfield with Joseph for a new life in Portugal. Following Katy's death in a car crash in October 2017, Chesney travelled to Portugal to collect Joseph and they returned to Weatherfield a few days later.
- Joseph was played by twins Ronny & Tommy Cheetham from his birth in December 2011 until January 2014. From August 2014 until March 2015, he was played by Lucca-Owen Warwick. The role was once again recast and taken over by William Flanagan when Joseph returned from Portugal in October 2017.
- Joseph's voice could also be heard in May 2016 calling out to Chesney who was on a video call to his girlfriend Sinead Tinker from Portugal. It is unknown who voiced this "appearance" as no credit was given.
- Joseph was uncredited until 2nd February 2015.