On leaving university Blakeway entered Lincoln's Inn, and was called to the bar in 1789. When his prospects of family money changed, he decided to enter the Church of England, and was ordained in 1793.[1]
In 1794 Blakeway was presented by his uncle, the Rev. Edward Blakeway, to the ministry of the Royal Peculiar of St Mary's Church, Shrewsbury. On his uncle's death he became official of the peculiar, and also succeeded him in the vicarage of Neen Savage in Shropshire, and in the rectory of Felton, Somerset. In 1800 he was presented to the vicarage of Kinlet, Shropshire.[1]
Blakeway was elected a fellow of the Society of Antiquaries of London in 1807. From 1800 till 1816 he divided his time between Kinlet and Shrewsbury, but, finding it inconvenient to keep up two houses, he gave up Felton and Kinlet in that year, and thenceforward resided exclusively in his native town. He died at the Council House, Shrewsbury, on 10 March 1826 aged 60, and was buried in St. Mary's Church, where a monument, executed by John Carline, was erected to his memory.[1]
An Attempt to ascertain the Author of the Letters published under the signature of Junius, Shrewsbury, 1813. Blakeway argued that the identity of Junius was John Horne Tooke.
The Sequel of an Attempt to ascertain the Author of the Letters published under the signature of Junius, London, 1815.
A History of Shrewsbury, 2 vols., London, 1825, with Hugh Owen.
The Sheriffs of Shropshire, with their armorial bearings, and notices, biographical and genealogical, of their families, Shrewsbury, 1831.