Various theories have been put forward to explain the origin of the masonic term 'tylcr' (occasionally in earlier times spelt 't-i-l-e-r').
The most popular has identified it with `tiler', meaning a man who works with tiles.
The latter word has through the centuries often been spelt 't-y-l-e-r'; but it may be well to say at once that nothing, not even pronunciation, can turn on these variations in spelling. It is, however, convenient to observe the modern distinction according to which 'tyler', the masons' outer guard, is spelt with 'y', and ‘tiler’ the roofing-man with ‘I’.
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1963 - THE ORIGIN OF THE TERM 'TYLER' - Bro. A. E. Currie.
