According to Patton, this street was “present and nearly fully developed on 1833 map, and said to be named after Lady Catherine Chichester, who was baptised in 1687” (Patton 1993, p. 58). Patton seems to be referring to Katherine Chichester who married Clotworthy Skeffington in 1713, becoming Viscountess Massereene, so she was a notable figure. She died in 1749, aged c. 62 years. The spelling difference is a minor issue, but the gap of 80 years or so between her death and the naming of Catherine Street is more problematic, unless other supporting evidence can be found.
"An application from owners of property in Catherine Street to have the name of portion of that street changed to Cromac Place was submitted and referred to the Surveyor for report". (24th March 1914).