Gnaeus Egnatius was a macedonian proconsul during the Roman Republic. He built the eponymous Via Egnatia which joined the Adriatic Sea to Istanbul (lat/long given below) which was begun in 146 BC and completed in 120 BC.
A proconsul was a promagistrate (like a propraetor) who, after serving as consul, spent a year as a governor of a province. Certain provinces were reserved for proconsuls; who received which one by senatorial appointment was determined by random choosing or negotiation between the two proconsuls.