[1][2][a] The directors contracted William Dargan to construct the line which was completed in 11⁄2 years, publicly opening on 28 May 1849.
[3] In 1864 the Newry and Armagh Railway (N&AR)[b] made a branch from Goraghwood on the Belfast to Dublin main line to their station at Edward Street.
[4] At the same time the NW&RR, who had recognised the need to connect to main Irish rail network since 1852, crossed the Newry (Clanrye) River and relocated northern terminus station from Kilmorey Street to Dublin Bridge.
[7][d] The LNWR began their Holyhead to Greenore service on 2 August 1876,[7] and Patterson observes the NW&RR would likely have realised it was then implausible that Warrenpoint, which had never really challenged Newry as a port, would ever establish itself for cross-channel trade.
[9] The line was transferred to the Ulster Transport Authority on 1 October 1958,[10] with the final train from Warrenpoint running on 2 January 1965.