Who did William Herschel marry?

Sir Frederick William Herschel (15 November 1738 - 25 August 1822) married the widow Mary Pitt (n

Sir Frederick William Herschel (15 November 1738 - 25 August 1822) married the widow Mary Pitt (née Baldwin) at St Laurence's Church, Upton in Slough on 7 May 1788. They had one son, John Herschel, also became a famous astronomer.