Martin 514
In those days (late 18th Century) Great Marlborough Street ended at the corner of Lower Abbey St. then called Ship Buildings. There was a narrow lane to the riverside called Ferryboat Lane or Union Lane 150 years ago. When this lane was widened this short street to Eden Quay was for some years after 1776 called Union St. before it became merged in Marlborough Street
Page 85 of North Dublin by Fr. Dillon Cosgrave (1977 Paperback edition but first published in 1909
Enjoy your trip
FelixQuaxer