Flushing was enumerated with Mylor in 1841:
HO 107/138
Book 10 Folio 24 Page 2
Moor St.
Ann Wood, 30,
William Eden, 7
Samuel Wood, 2
Samuel George Hart Wood was chrs. 14 Mar 1839 in Mylor, Cornwall, to William Wood and Ann. There is also listed on the IGI John James Wood chrs. 26 Sep 1841 Mylor (William John Wood and Ann) and a Mary Ann Wood chrs. 25 Dec 1843 to William Wood and Ann.
Mylor marriages shows:
May 9 1833, Mylor, William Eden of Sunderland, mariner, to Ann Tuffery
Sep 12 1837, Mylor, William John Wood, aged full, father William, to Ann Eden, aged full, widow, father Gooden Tuffery.
Also Dec 31 1838 Mylor Gooden Tuffery, 30, father Gooden, to Ann Lang, 30, father John.
Maybe he's listed as 'Wood' in 1851 and that's why he can't be found? They don't seem to be in the Mylor area in the 1851 or later censuses...