John Sutton of Carmarthen,who was the father of the three Sutton brothers who came to Port Talbot was a part owner of the ship "Fame " of Carmarthen in 1826 and his son Charles Sutton sailed on her.

Thomas Sutton of Margam married Catherine Edward also of Margam,at Margam Abbey Church 7.March.1819.
A copy of the register entry could be got free from West Glam Archives Swansea.
Thomas and Catherine first lived, after their marriage at Duffryn Uchaf, with a Thomas family who had inheritated the farm from  Lewis and Catherine Edward Catherine Edward`s parents.
It was here that their first born son Thomas Sutton Jnr. was born in 1820,but by 1822 they had move the short distance down to the village of Taibach where a further nine children were born.
Thomas Thomas a son from Duffryn Uchaf farm, where Thomas Sutton had been a lodger in 1820, had became the post master at the Taibach Office.
And so it is no suprise to find that Thomas Sutton became the Innkeeper at the next door Somersetshire Inn,as we see in the below -

1841.Taibach [no address given, but I can see that it is near Somerset House]
Thomas    Sutton    45    abt 1796    Male  grocer.  not born in Glam    
Catherine    Sutton    50    abt 1791    Female        Glamorgan    Wales
Thomas Sutton    20    abt 1821    Male  Seaman.        Glamorgan    Wales
Catherine Sutton    15    abt 1826    Female        Glamorgan           Wale 
Ann    Sutton    15    abt 1826    Female        Glamorgan    Wales
Mary Sutton    14    abt 1827    Female        Glamorgan    Wales
Lewis Sutton    12    abt 1829    Male        Glamorgan    Wales
Jenkin Sutton    8    abt 1833    Male        Glamorgan    Wales

1851.Somersetshire House Taibach.
Thomas    Sutton    Head    55    abt 1796    Male Innkeeper.    Carmarthen, Carmarthenshire, Wales
Catherine     Sutton    Wife    61    abt 1790    Female    CrossWen, Glamorgan, Wales
Thomas Sutton    Son    31    abt 1820    Male    Daffyin, Glamorgan, Wales
Catherine     Rees    Daughter    28 m    abt 1823    Female mariners wife    Taibach, Glamorgan, Wales
Mary    Sutton    Daughter    23    abt 1828    Female    Taibach, Glamorgan, Wales
Jertheri E    Sutton    Son    17    abt 1834    Male    Taibach, Glamorgan, Wales
Charles    Jones    Visitor    25    abt 1826    Male    Carmarthen, Carmarthenshire, Wales
Ann    Rees    Servant    31    abt 1820    Female    Llandelo, Carmarthenshire, Wales
Margaret    Thomas    Servant    20    abt 1831    Female    Cadoxton, Glamorgan, Wales
Sarah    Daniel    Servant    23    abt 1828    Female    Llanon, Carmarthenshire, Wales
Mary    Jones    Visitor    68    abt 1783    Female    Morritton, Glamorgan, Wales
William    Douse    Visitor    34    abt 1817    Male drainer.    Kevil, Wiltshire, England
Nicholas    Paul    Servant    19    abt 1832    Male    North Milton, Devon, England
[ note wife Catherine Sutton said born CrossWen.]

Cambrian    C10    DEATHS, DEATH NOTICES    05 December 1856    MARY WIFE OF JOHN SAVOURS,GLOBE INN, ABERAVON,AGE 29 - DAUGHTER OF THOMAS SUTTON,SOMERSET HOUSE,TAIBACH

MI.B20.Margam.Chest Tomb.
Sacred to the memory of Thomas Sutton
who was born in Carmarthen 3rd.May.1795
and died at TaibachSept.1855
Also of Catherine Lewis his wife        [ seem error here Lewis should read Edwards]
who was born at Duffrin Jan.17.1788
and died 29.March.1853
Also of Jenkin Edward their son
who was born May.1833
and died 23.August 1862
Also of Thomas Sutton son of
Catherine and Thomas Sutton
died 18.Sept.1892.aged 73 years.

Margam burial index shows
Thomas Sutton buried 4.Sept.1855 aged 60. Taibach.
Catherine Sutton buried 26.March.1853 aged 63 Taibach.
Jenkin Edwards Sutton buried 27.Aug.1862 aged 29.Taibach.
Thomas Sutton letter carrier buried 20.Sept.1892 aged 73 Maes Y Cwrt Taibach
[ this entry is star against it indecateing that there is a note in the register ]

MI.B21. Margam. Chest Tomb.
To the memory of Lewis son of 
Thomas and Catherine L.Sutton of Taibach
died 14.Feb.1824 aged 3 years
and of Anne their daughter
died 30.Aug.1825 aged 15 years
Also of their infant son 3.Apr.1830
Also of Catherine Rees
daughter of Thomas and Catherine Sutton
died 30.June 1907 aged 84 years
Also of Elizabeth their daughter
died 9.Aug.1837 aged 7 years
Also of John their son
who was accidentally drowned  at Bristol
29.April 1845 while serving as mate
of the Breeze of Brixham aged 22 years
and is interred beneath this tomb
Also their sonn Lewis Philip their son
who died 14.Feb.1865 aged36 years.

Margam burial index shows
Lewis Sutton buried 17.Feb 1824 aged 2 years.
Ann Sutton buried 1,Aug.1825 aged 3 weeks Taibach
Elizabeth Sutton buried 21.Aug.1837 aged 6 years Taibach.
John Sutton buried 12.May.1845 aged 21 Taibach.
Lewis Sutton buried 17.Feb.1865 aged 35 Taibach
[ INDEX only goes up to 1900 so look in register at Swansea records 
to find daughter Catherine Rees ]

Thomas Sutton b.1819.

He was a letter carrier, see death register for added info there.

1841 with father as a sailor 
1851 At Somerset Inn with father no trade given
1861. At Somerset Inn with brother no trade given

1881.32.Clark St. Bristol.
Catherine   Rees hd. m. 59.house/k. Margam
Thomas Sutton brother u/m.61. g/lab Margam
Thomas S.Johns nephew u/m.24. blacksmith Margam
Morgan Johns nephew u/m.22 engine fitter Margam      
Leaker S. Johns nephew u/m.18.engine fitter Margam
Lewis S.Johns nephew 10 scholar               Neath
William Mainwaring hd.m.51. mining engineer Neath
Catherine S. Mainwaring wife 31. Margam
Herbert R.Mainwaring son 1. Glos.
Gweny Rees sevt,u/m.18. Margam.

Catherine Sutton b.1822.

Marriages Jun 1844   
      
REES     John          Neath     26    727            
Sutton     Catharine          Neath     26    727

1881.32.Clark St. Bristol.
Catherine   Rees hd. m. 59.house/k. Margam
Thomas Sutton brother u/m.61. g/lab Margam
Thomas S.Johns nephew u/m.24. blacksmith Margam
Morgan Johns nephew u/m.22 engine fitter Margam      
Leaker S. Johns nephew u/m.18.engine fitter Margam
Lewis S.Johns nephew 10 scholar               Neath
William Mainwaring hd.m.51. mining engineer Neath
Catherine S. Mainwaring wife 31. Margam
Herbert R.Mainwaring son 1. Glos.
Gweny Rees sevt,u/m.18. Margam.

Lewis Philip Sutton b.1829.

1841 aged 12 with his father at
1841.Taibach [no address given, but I can see that it is near Somerset House]

At sea 1851-56. 
His sea record
SUTTON     Lewis P.  Taibach   1829      47430     14/02/65  90927     M51 GLA  124/9&10
     P.= Phillip. C/352-96/1851-4. C/133-96/1855. C/Emma of Swansea/1856. Died on 14 February 1865.

Marriages Jun 1853  
Sutton     Lewis Philip          Bedminster     5c    133[85]      

From Slaters Commercial Directory, 1858-1859.
Castle (spirit vaults), Lewis P. Sutton, High st

1861.Castle Inn. Gin House.[ listed inbetween Cwmavan Rd. and Butter St. ]
Lewis P    Sutton    32    abt 1829    Head    Male    Aberavon    Glamorgan    Wales
Eliza E    Sutton    28    abt 1833    Wife    Female    Bristol
Thomas L    Sutton    7    abt 1854    Son    Male    Aberavon    Glamorgan    Wales
John M    Sutton    3    abt 1858    Son    Male    Aberavon    Glamorgan    Wales
Sarah Ann    Jenkins    21    abt 1840    Servant    Female    Margam    Glamorgan    Wales

Deaths Mar 1865  
SUTTON     Lewis          Neath     11a    426     
No MI Found?

1871.Jersey Marine Hotel.Cadoxton.
Eliza    Sutton    Head    34    abt 1837    Female. House keeper    Bristol    Somerset    England
Eliza    Evans    Servant    22    abt 1849    Female cook    Neath    Glamorganshire    Wales
Ann    Jones    Servant    18    abt 1853    Female    Mumbles    Glamorganshire    Wales
Charles    Prees.29    abt 1842    Male. Gas man    Cadoxton    Glamorganshire    Wales

SUTTON     Lewis P.  Taibach   1829      47430     14/02/65  90927     M51 GLA  124/9&10
     P.= Phillip. C/352-96/1851-4. C/133-96/1855. C/Emma of Swansea/1856. Died on 14 February 1865.

Jenkin Edward Sutton b.1833.

1858.Directory
Somersetshire House, Jenkin E. Sutton, Taibach

1861.Somerseshire. House.Taibach
Jenkin E    Sutton    27    abt 1834    Head u/m Innkeeper    Male    Margam    Glamorgan    Wales
Catherine     Rees    39    abt 1822    Sister M.    Female    Margam    Glamorgan    Wales
Thomas    Sutton    47    abt 1814    Brother    Male u/m.    Margam    Glamorgan    Wales
Mary A    Jones    29    abt 1832    Niece    Female    u/m    Carmarthenshire    Wales
Mary    Rees    20    abt 1841    Servant    Female    Llangonoyd    Glamorgan    Wales
Ann    Street    28    abt 1833    Servant    Female    Margam    Glamorgan    Wales
Catherine    James    20    abt 1841    Servant    Female    Llangonoyd    Glamorgan    Wales
William    Brown    33    abt 1828    Son    Male. mariner    Truro    Cornwall    England
Ann    Harries    55    abt 1806    Lodger    Female Lodger.    Llanelly    Carmarthenshire    Wales
[may7.FTW]

1858.Directory
Somersetshire House, Jenkin E. Sutton, Taibach

1861.Somerseshire. House.Taibach
Jenkin ESutton27abt 1834Head u/m InnkeeperMaleMargamGlamorganWales
Catherine Rees39abt 1822Sister M.FemaleMargamGlamorganWales
ThomasSutton47abt 1814BrotherMale u/m.MargamGlamorganWales
Mary AJones29abt 1832NieceFemaleu/mCarmarthenshireWales
MaryRees20abt 1841ServantFemaleLlangonoydGlamorganWales
AnnStreet28abt 1833ServantFemaleMargamGlamorganWales
CatherineJames20abt 1841ServantFemaleLlangonoydGlamorganWales
WilliamBrown33abt 1828SonMale. marinerTruroCornwallEngland
AnnHarries55abt 1806LodgerFemale Lodger.LlanellyCarmarthenshireWales