Josiah Clowes was the engineer for the canal from the start of its construction until his death in 1795, and the tunnel was his design.
Morris was sacked in September, to be replaced by Josiah Clowes.
In 1791 he gave evidence on three projects to the House of Commons.
Josiah Clowes was appointed Chief Engineer, but died in 1795 part way through construction.
Josiah Clowes was employed as the engineer, and construction began in November 1793, starting at the Kings Norton end.
Josiah Wedgwood | Josiah | Josiah Royce | Daniel Clowes | Josiah Bartlet | Josiah Clowes | Josiah Willard Gibbs | Josiah Wedgwood, 1st Baron Wedgwood | Josiah Henson | Josiah Gilbert Holland | William Clowes | Josiah Meigs | Josiah Latimer Clark | Josiah Gorgas | William Laird Clowes | William Clowes (Primitive Methodist) | Josiah Wedgwood II | Josiah Quincy, Jr. | Josiah Parker | Josiah Macy, Jr. Foundation | Josiah Gregg | Josiah Child | William Clowes Ltd. | Sydney Barber Josiah Skertchly | Josiah Wood Whymper | Josiah W. Macy, Jr. | Josiah Willard Gibbs, Sr. | Josiah Whitney | Josiah Wedgwood III | Josiah Warren |
He gave evidence in Parliament in support of the bill for what became the Thames and Severn Canal, and although he did not act as engineer for the project, he probably recommended Josiah Clowes for the post, and later assisted him with the most difficult part of the engineering, which was the setting out and production of profiles for Sapperton Tunnel.