The Machynlleth entry in Robson's Directory of North Wales for 1840 includes details of the local regular horse-drawn transport services of the time. These were published just three years after Queen Victoria was crowned.
Most of these services were to end later in the Victorian period with the coming of the railway to the district in 1863. The Royal Mail coach service between Aberystwyth and Shrewsbury, which passed through Machynlleth, was the last official coach service to operate in the UK.

The list of carriers seems very odd these days because all the people who provided horse-drawn wagons to carry goods on regular routes are shown as starting "from his own house" !
A list of coach services operating from Machynlleth in 1858, which was near the end of the days of coaches and horse wagons, can be seen on the next page...

Coaches and horses in 1858...