The schoolmaster's son maybe:
One son, Henry b. Dublin
Henry Michael FLENLEY
gender: Male
birth: 1819 Apr 29
Dublin, Ireland
christening: 1819 May 23
Dublin, Ireland
death: 1872 Jun 29
Tarnagulla, Victoria, Australia
burial: 1872 Jul 2
Tarnagulla, Victoria, Australia
afn: HJ06-B5
wife Mary Anne ARDERN
marriage: 1848 Oct 28
St. Michael's Toxteth, Walton-On-The-Hill, Lancaster,
From familysearch.org (Remember, this is a record someone sent in, it is not as yet verified.) Think this may be the same WHF as in:
Index to the Captains Registers of Lloyd’s of London (Guildhall Library Ms 18567)
FLENLY, William Henry b. Dublin 1817 C1681 Liverpool 1849
vol. 5 1852-1864, 1866, 1869-1872
I don't think these are on line, only the indexes, I may be wrong there.
A very good source for his records if you can establish he is your Mariner Ancestor.
Trove gives a Captain Flenly commanding a ship: The Sydney Morning Herald (NSW : 1842-1954) <Monday 8 December 1856> See newspaper clip below:
http://trove.nla.gov.au/Some Records of Mariners in Austriala are on
http://pandora.nla.gov.au/tep/45520For example:
http://mariners.records.nsw.gov.au/1854/03/052arg.htm Gives List for probably the same chap as
ARGONAUT
OF LIVERPOOL, WM. HENRY FLENLEY, MASTER, BURTHEN 1237 TONS
FROM THE PORT OF LIVERPOOL TO SYDNEY, NEW SOUTH WALES, 11TH MARCH 1854
i just did a quick search, there are more records around.
Otherwise you could try posting on the Rootschat Australia Board to find out about ships lists etc.