Are you looking for the Andrew O'Donnell who was aboard Friesland that landed in Phila May 25 1908? Ancestry record shows he was going to stay with cousin Michael Ryan 115 West 13th St New York City & his last residence was Fethard (Tipperary) Ireland & his father's name was Michael with address possibly misspelled as Kilnocran.www.census.nationalarchives.ie
1901 & 1911 Census available for free. 1901 Census Tipperary-Peppardstown-Kilknockan House 10 has Michael O'Donnell with his wife Annie & children Mary (13), Andrew (11), Laurence (8) & William (1).
1911 Census for Tipperary-Peppardstown-Kilknockan now House nbr 3 has Michael & Annie along with Laurence & William - census asked how many children born & living - answered 4 to both - Andrew most likely in USA - Mary could be married, living elsewhere or away.
Hope this helps.