Totally frustrated at this point!

I have found that an ancestor of mine traveled aboard the vessel "Plutarch" from Liverpool to New York bet. 1855 - 1857. (This info from the New York Emigrant Savings Bank Records also available at Ancestry.com)

My research shows that this particular ship was not even in service until 1856 so that 1855 date is clearly wrong BUT even though I have checked EVERY manifest for the "Plutarch" I cannot find my ancestor on any of them.

Realizing that it could be a transcription error, I even went the route of checking EVERY page of EVERY actual manifest and still came up empty.

Can anyone advise if EVERY extant manifest has been transcribed and included in this database?

Thanks!
Kathy

Denis Shanahan
Known sailing dates for Plutarch:
29 October 1856
17 Jul 1857
16 Nov 1857
26 Apr 1858
13 Sep 1858
12 May 1859
15 Sep 1859