Having started this page I realize it's time I put some more effort into this family!!
The first known Fleetham in our tree, to date, is one Robert Fleetham who I estimate to be born around the late 1740's. 

                                                   Robert Fleetham         m.          Elizabeth Reynoldson
m. 20 May 1771
North Otterington, Yorkshire, Eng.
I
Thomas Fleetham
c. 16 Nov 1777
North Otterington
d. 4 Mar 1852
Pickhill.
m. 15 Dec 1803
Pickhill with Roxby, Yorkshire.
Elizabeth Harland
c. 20 Sept 1772
North Otterington.
d. 16 Nov 1832
Pickhill.
            _________________________________I_______________________________
            I                              I                             I                               I                                   I
      Thomas                  Robert                   John                      George                 Saint Andrew
  c.1 Jan 1805         c.13 Jan 1806       c.13 Nov 1807         b.14 Jan 1809           b.30 Nov 1810
     first three children all c. Pickhill with Roxby                  Durham                 Girsby, York.
                                   Yorkshire.                                          c.5 Feb 1809            c.26 Dec 1810
                                                                                                 Sockburn                  Sockburn
                                                                                                   Durham                     Durham
                                                                                                                                  d.2 Dec 1874
                                                                                                                                    Hartlepool
                                                                                                                                  m. 3 Oct 1838                                                                                                                                                                  Jane Liddell
                                                                                                                                  c.5 Sept 1804
                                                                                                                                 d.10 May 1876                                           _________________________________________________________________I
           I                                               I                                     I                                            I
Thomas Henry                            William                       Eliza Jane                               Edwin
b. 6 Sept 1840                        b. 18 Mar 1842            b. 19 Sept 1843                   b. 23 May 1846
      all born Hartlepool, Durham, Eng.                     d. 18 Jun 1918                     m. 2 Jan 1879
d. 17 Dec 1881  ??             m. Jane Snowdon      m. 18 Aug/Sept 1867          Marg. MacDonald
  Sunderland                           17 Sept 1879        George Willan Grainger


NOTES:
EDWIN FLEETHAM  1846: Edwin residing at 19 Moor Terrace with his Scottish born wife, Margaret, at time of 1881 cencus. No children in evidence only a 15 yr old servant girl.
According to George Willan Grainger's notes Edwin was a master ,mariner and his wife was a certified teacher.
ELIZA JANE FLEETHAM  1843: Birth registered Stockton 1843 4th Quarter xxiv pg 221?
Eliza Jane died Wellington 1918 death cert no. 1323. As the family were sailing to NZ, Mt Tarawera erupted, the report heard at Cape Town was that the NI had turned over. Eliza Jane left England for NZ with her husband and family.  An account of their pioneering life, written by her son, Charles Andrew Grainger, makes interesting reading.  Also there are more of her family photographs on the Grainger family page.
SAINT ANDREW FLEETHAM 1810: Saint Andrew Fleetham was a grocer and Importer.  At the time of his marriage he was resident in Hartlepool and his wife resident at Claypath.  Witnesses to the marriage were Ralph Laider and Mary Ann Mitchell.
Wife JANE LIDDELL 1804: Resident of Claypath at time of marriage.
THOMAS FLEETHAM 1777: ?? Buried Singapore 10/5/1905 aged 58 yrs.
Wife ELIZABETH HARLAND 1772: Daughter of John Harland and Esther Smirfitt. ? Died aged 61. Of Newton Grange at time of death.
THOMAS HENRY FLEETHAM 1840:  An unmarried, out of work stationer living with his brother William at the time of the 1881 cencus. He died later that year.
WILLIAM FLEETHAM 1842: 1881 - William, a cashier, was living at Wingate Grange Farm, Durham with his wife Jane.
Eliza Jane Grainger nee Fleetham
PROBATE RECORDS:

SAINT ANDREW FLEETHAM
Effects under 800
13 May 1875
The will of Saint Andrew Fleetham late of Hartlepool in the county of Durham, Grocer who died 2 Dec 1874 at Hartlepool was proved at Hartlepool by Jane Fleetham of Hartlepool, widow ot the relict, the sole executrix.

SAINT ANDREW FLEETHAM
Effects under 400
13 December 1879
Administration with the will of the Personal Estate of Saint Andrew Fleetham, late of Hartlepool in the county of Durham, Grocer who died 2 Dec 1874 at Hartlepool, left unadministered by Jane Fleetham, widow the relict, the sole Executrix, was granted at Durham to Thomas Henry Fleetham of Hartlepool, Stationer, the son, one of the Resduary Legalees. Submitted former. Granted at Durham May 1875.