Joe Murphy
... that Joe Murphy's civil-engineering firm was known colloquially as "Grey Murphy" to distinguish it from that of his brother, which was known as "Green Murphy"?
... that <b id="mwBQA"><a href="./Joe_Murphy_(contractor)" id="mwBQE" rel="mw:WikiLink" title="Joe Murphy (contractor)">Joe Murphy</a></b><span about="#mwt66" class="nowrap" data-mw='{"parts":[{"template":{"target":{"wt":"`s","href":"./Template:`s"},"params":{},"i":0}}]}' id="mwBQI" typeof="mw:Transclusion"><span typeof="mw:Entity">'</span>s</span> civil-engineering firm was known colloquially as "Grey Murphy" to distinguish it from that of <a href="./John_Murphy_(contractor)" id="mwBQM" rel="mw:WikiLink" title="John Murphy (contractor)">his brother</a>, which was known as "Green Murphy"?