Beware the census transcriptions! Here is a perfect story about why you always want to look at images of original records:
Genealogists searching the online Irish census of 1911 for their Derry ancestors have been left puzzled by a "phantom" street in the city. More than 100 homes are listed on a "Lesky Road" in Derry's Urban 4 district, which roughly covers the modern day Bogside. There is but one problem: Lesky Road does not exist today and apparently never did in the past.
The 1911 census for Ireland was transcribed about twenty years ago and those transcriptions were used for the new version on the Web. It seems that the transcribers must have encountered difficulty reading the hand-written name of the street in question. They recorded it as "Lesky Road" but a close examination by Derry residents familiar with the city shows that the street name is really "Lecky Road" in Derry's urban 2 district.
You might want to check your records if you obtained information from the (transcribed) online 1911 Irish census.
The online census will be revised in the coming months to correct errors, including Lesky Road.
This certainly is not the only error in online transcriptions. Always check your information against the original sources!