I like this `faint hope` thread.  

  I am hoping one day to find where    my Shaughnessys came from.  County,   townland or  parish,   I haven`t the foggiest. The censuses I have from Salford and  Manchester, where they settled, give only `Ireland` and like so many others with Irish roots we seem to have so little chance to find our ancestors. This is what I have on the original family that moved to England. ( Sometimes there were variations in the spelling of Shaughnessy` but they did not seem to use O.` They were Catholics.  
William Shaughnessy.   b( about)       1808 (on the 1851 Salford
census)                blacksmith striker. . b. Ireland
Ann  Shaughnessy , wife,          b 1809  b.  Ireland
James Shaughnessy,         son,  (living nearby)          b 1831  b   Ireland  Cabinet maker. 
Michael Shaughnessy un   b 1833 Tenter Cotton b Ireland
then a gap of 10 years,( perhaps there a previous marriage and Ann was the second wife)   and more children b in Salford. Thomas b 1843, Edward b 1845,and Mary Ann.b 1847)
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Another dead end is the birth of:
 Annie Maria Boyle, Catholic,   b about 1862-63 in Co Tyrone. seems to have been an only child born to John Boyle b about 1834 and  his wife Mary b about 1839. they moved to Manchester before 1871 when Annie was a child.