There is a marriage for a Samuel SUGDEN to an Elizabeth MORSE at St Martin in the Fields Westminster on 11 May 1819, which might be his first wife.
St Sepulchre Holborn
1822 May 22, Maria, d/o Samuel & Elizabeth SUGDEN, No 5 Angel Court, Artificial flower maker
1824 Aug 22, Frederick, s/o ditto
1826 Jun 7, John, s/o ditto
St Pancras Church
1826 Jan 25, Elizabeth, d/o Samuel & Elizabeth SUGDEN, Angel Court, Flower maker, born 1825 Dec 18
St James Clerkenwell
1830 Sep 19, Emily, d/o Samuel & Elizabeth SEBDEN, Chapel Court, Flower maker. born 1830 Aug 20
1832 Oct 14, Louisa, d/o Samuel & Elizabeth SUGDEN, Rodney St, Artificial florist, born 1832 Aug 24
1833 Oct 20, Mary Ann, d/o ditto, born 1833 Aug 22
1839 Oct 20, Louisa Jane, d/o Samuel & Rachel SUGDEN, 31 Rodney St, Florist, born 1839 Jun 13
Ages match with the children in 1841, and the two elder daughters with Samuel and new wife Emma in 1851. John in 1841 also is 15, not 65.
It is the same Samuel and Emma who had Albert Sydney in 1864.
Ian C