As I mentioned in my last post, the Tierney family moved to Quincy around 1895. They were one of many, many Irish families who exited the North End when the influx of European Jewish settlers began taking over the area. South Boston soon replaced the North End as the area of the majority of Irish settlement. Quincy and other areas outlying Boston also gained many Irish residents.
This map, circa 1880 (click on it to view it up close), shows the date that various areas were annexed by Boston. It is a good overview of the city during this pivotal time of growth, when Patrick & Catherine Tierney were in the midst of raising their children in the crowded and difficult world of the Irish North End of Boston.