The Corries Williamson joined Bill Smith and Ron Cruikshank to form the "Corrie Folk Trio" in 1962. The Trio's first performance was in the Waverley Bar on St Mary's Street, Edinburgh. After a few weeks Ron Cruikshank left because he had contracted glandular fever. The Trio had already accepted an engagement at the
Edinburgh Festival, so Williamson suggested that
Ronnie Browne should be asked to join the group in order that it would have three members again. It was sung in the 2007 Commonwealth Games by Ronnie Browne, though he swore never to sing it again, saying that it was a struggle not to be overcome with emotion.
Combolin Williamson, whose many talents ranged from art to woodworking, co-designed a boat named The Sheena Margaret, which was named for his younger daughter with his first wife, Violet. In the summer of 1969 he invented the 'combolins', two complementary instruments that combined several instruments into a single one. Browne's instrument contained a
mandolin with a guitar (along with four bass strings operated with slides); Williamson's had a guitar as well as the 12-string Spanish
bandurria, the latter being an instrument he had played since the early days of the Corrie Folk Trio. Originally conceived as a way to combine several of the many instruments they carried around on tour – the Corries' long row of chairs behind them on stage bearing instruments is legendary – the combolins in fact became an additional two instruments for the tour van. Most often, Browne played the guitar/mandolin instrument with bass strings, and Williamson the other, which also had 13 sympathetic strings designed to resonate like the Indian
sitar. The wood for the combolins was obtained from antique hardwood furniture as well as premium grade Tyrolean
spruce, and displayed Williamson's artistic embellishments in silver and mother of pearl. The Corries' album, Strings and Things (1970), was specifically designed to display the new instruments: It featured detailed descriptions of them on the rear sleeve. Williamson had advertised the combolins a year prior to completing them and had first tested them only a short while before a concert but found that they sounded terrible. He had to quickly rebuild them and learn to play them with Browne before the concert day. When the combolins were played, Browne and Williamson often switched places from left to right respectively to right and left. ==Personal life==