....Thomas Cassen married Sarah Carter on 24/01/1869 (He was of 6, Leary's Cottages, she of 34 Sir Johns Quay).
Their children were:
Anne Casson 1869; 7 Leary's Place
Hanna Cassins 1871; 34 Sir Johns Quay
Sarah Cassin 1874: 16 Clarence Place
Patrick Cassin 1875: 16 Clarence Place.
....
Leary's place is listed as being off Townsend St, but no details are included in Thom's ('77). The Townsend St listing does not mention where the junction with Leary's place was located. I suspect Leary's cottages would have possibly been near to this. Townsend St - mostly businesses and shops (all kinds)
The 1877 listing for no. 34 Rogerson's Quay/Sir John Rogersons Quay has P. Slevin, boot and shoe maker. Other nearby addresses include a corn merchant, ship smith, grocer & spirit merch, timber & slate stores, patent rope manuf. & Russian merch., ship broker, oyster merch. etc. I dont see any tenements on the street at that time, so it does appear to be a reasonable (but probably very busy) area to live.
Details of Clarence place are not listed, but the street it is off (Gt. Clarence St South) looks to me like nice mix of private houses, shops and businesses. The Grand Canal Street end has a grocer, a few stone masons, carpenters etc. Most of the rest of the street is occupied by private residents including an inspector with the DMP (police). Quite a few do not have occupations listed which usually means they are well off.
The streets which are not listed in Thom's directories were usually the slightly less well off side streets, with just smaller tenements or cottages, and no businesses, shops or prominent residents.
Shane