There's a Thomas Street in Ringsend. It doesn't appear on Google Maps, but you can clearly see it on older maps of Dublin, where Bridge Street turns onto Irishtown Road (
see this post). This part of the village wasn't tenaments - they were on the side streets off of Thorncastle Street.
George lived at other addresses in Ringsend, including 21 Pembroke Cottages and 2 Bridge Street. I'm descended from his brother, William, who lived in Thorncastle Street. They had another brother, Bernard Brian (everyone called him by his middle name), who lived in a few places in the city centre - 5 Denzille Lane, 14 Grants Row, 9 Mark's Lane, 39 Power's Court, 8 McGuinness's Court (off Lombard Street) and 2 Gloucester Street.
They originally came from Cronellard, next to Tara Hill in Wexford. Their parents were John Penston and Margaret Canavan. The Penston's had been tenant farmers in Cronellard, which belonged to the Earl of Courtown, probably since the mid 1700's. The family became poverty stricken when John fell into arrears shortly after the Great Famine.
