The second child of Jonas and Mary Priestley, was born at Fieldhead in the parish of Birstall, Yorkshire, on 19 June 1734.
[1] His elder brother Joseph Priestley, thought Timothy frivolous; but he received a religious direction from James Scott (1710-1783), who became minister of Upper Chapel, Heckmondwike in Yorkshire, in 1754.
Scott in 1756 established a dissenting academy at Southfield, near Heckmondwike, and Timothy Priestley was the second young man who entered it as a student for the ministry.
Priestley was accused of "irregularities" amounting to trading to increase his salary, for example participation in "the liquor business" and making packing-cases on Sunday nights (he said he never began till the clock struck twelve).
[1][2] Priestley refused to join the petitions (1772-3) for relaxation of the Toleration Act, except on the condition that concealment of heresy should be made a capital offence.
In 1782 the two Priestleys were appointed to preach the "double lecture" (24 August) at Oldbury, Worcestershire; Joseph wished his brother to decline, and on his refusal to give way, himself withdrew, his place being taken by Habakkuk Crabb.
He then received a call to succeed Richard Woodgate (d. 28 June 1787) as minister of Jewin Street independent church, London.
[8] Cappe's machine was bought for therapeutic purposes at Leeds General Infirmary, where William Hey supported the treatment; Timothy Priestley was paid £5 11s.
[1] On his brother Joseph's death he preached at Jewin Street, 29 April 1804, and printed (1804) a funeral sermon, with appendix of anecdotes, the authenticity of some of which has been disputed.