Henry Siddall, third son of George Siddall of Matlock, was educated privately and at Oakham Grammar School. He entered Clare College Cambridge, and graduated in 1862.

His first appointment was as Mathematics Mater at King William's College, Isle of Man. He was ordained Deacon in 1863 and Priest the following year, by the Bishop of Ripon, and licensed to the curacy of Tong, near Leeds. He was then appointed Mathematics Master at Warrington Grammar School, and was curate of Orford from 1866 to 1869. He was inducted to the Benefices of St. Anne’s, Warrington in 1869, and two years later was appointed Vicar of St. Thomas's Ashton. He was also chaplain of the 2nd Volunteer Battalion Warrington, for twenty one years, and held the V.D decoration. He married Margaret Emily Gardner, daughter of the Rev. T. Gardner, Rector of St. Anne’s, Stanley, Liverpool, and they had five sons and two daughters.

The outstanding events of his ministry at St Thomas's were the rebuilding of the Church; the building of the mission church of St Luke’s, Stubshaw Cross; the enlargement of St Thomas's day Schools, and the building of the Schools at Stubshaw Cross, and the infant School of St Thomas's; the re-modelling, and afterwards the re-building of the organ in 1905; the extension of the churchyard and the providing of new burial ground in Heath Lane. His last undertaking was the beautifying of the Church and the panelling of the chancel, which sadly he did not live to see completed.

He took considerable interest in local affairs, being a member of the old local board, chairman of the Technical Education Committee, a Trustee of the Linen and Woollen Stock Charities, and the first co-operative Governor of the Grammar School, and from 1901 Chairman of the Governors.

He died on All Saints day, November 1st 1907. Since undergoing a major operation in May 1906, he had never been free from pain, but it was a mark of his strong character that he never gave in the suffering and never ceased from working. On the Sunday evening previous to his death, he had preached to a large congregation with unusual vigour. On the Monday he was very weak and tired but he went into Church to see the progress of the work he had put in hand. On the Tuesday he seemed stronger but during the day he was taken ill, and it was soon obvious that the end was near.

With the simple but dignified ceremonial of our Church, he was laid to rest almost beneath the shadow of the church he had built.