This will was found by Peter J Aggleton and deals with Thomas Aggleton a mariner on HMS Somerset in 1740, leaving his estate to his

mother Hannah Aggleton. The will is executed by the middle of 1744 (but no detail on Thomas's death).

There is a "transcription" of the will by MJA with some words to be clarified and also a description of HMS Somerset.

 Unfortunately at present neither Thomas nor his mother Hannah can be traced.

MJA's transcription:
IN THE NAME OF GOD AMEN
 I,THOMAS AGGLETON, mariner belonging to his majesty's ship SOMERSET, being in bodily health and of sound and disposing(?) mind and
memory and considering the perils and dangers of the seas and other uncertaintys of this transitory life, so far avoiding controversys after 
my (---?) make publish and (----?) this my last will and testament, in manner following, that is to say,(---?) I recommend my soul to God 
that gave it and my body I commit to the Earth or Sea as it shall please God to order and as for and concerning all my goodly estate I give,
bequeath and dispose thereof as followeth that is to say all my (--ages?) (--?) and sums of money, lands, testaments, goods chattells and  
Estate whatsoever as shall be always (out--ing?) or belonging unto to me at the time of my decease. I do devist(?) and bequeath the same 
unto my honoured mother HANNAH AGGLETON of Saint George in the East (Stepney) but in case of her decease unto her son WILLIAM 
SPILLMAN and I so hereby nominate and appoint the said HANNAH AGGLETON executrix of this my last will and testament hereby  
revoking all former and other wills testaments and deeds of gift my me at any time heretofore made and I do ordain and ratify these 
presents to stand and be my only last will and testament substitues(?) whereof to this my said will I have set my hand and seal the twelfth 
 day of June Anno Domi 1740 THOMAS AGGLETON signed sealed and published in the presence of us Thos (Bull?), John Thomas.   
(?) Leekey of the SOMERSET.
This will was proved at London before the worshipfull Robert Jenner(?) Doctor of laws, Surrogate of the Right Worshipfull John 
(Isettescoorth?) also Doctor of Laws Master keeper or Commissary of the Prerogative Court of Canterbury lawfully constitutes on the 
sixteenth day of June in the year of our Lord 1744 by the oath of HANNAH AGGLETON, widow, the mother of the deceased and sole 
executrix named in the said will to whom was granted administration of all and singular the goods chattells and credits of the said deceased 
being first sworn(?) duly to administer.

HMS Somerset

The first  HMS Somerset was a 3 decker 3rd rate (meaning having the  3rd size from the largest guns) 80 gun wooden warship built at Chatham in 1698. It was hulked in 1715 and broken up in 1740

1731-1746 The second HMS Somerset followed soon after. She too was an 80 gun ship of the line and was launched at Woolwich in 1731. Lord George Rodney, later to triumph at the Battle of the Saints in 1782, served in HMS Somerset in 1739 while preparing for his Lieutenant's exams. The ship saw action at the Battle of Toulon in 1744. Toulon was an infamous engagement and consequently no battle honour was awarded. A combined Franco-Spanish fleet that had been blockaded in Toulon for two years finally put to sea, led by Admiral de la Bruyere de Court. The blockading British fleet under Admiral Thomas Matthews was roughly the same size as the Franco-Spanish fleet but fearing that the enemy fleet movement was designed to force him out of position and allow a troop convoy to reach Italy, Matthews ordered his fleet to attack before forming up into line. Admiral Richard Lestock, Matthew's second in command, appears to have deliberately misunderstood his orders, and the resulting battle was indecisive, with the British taking more damage than they inflicted. Matthews was dismissed from the Navy for failing to obey permanent fighting instructions for battle. The second HMS Somerset was broken up in 1746.

Typical  3 decker 3rd rate 80 gun wooden warship (but missing two masts)

Since the battle of Toulon took place on the 11th February 1744, it is feasible that Thomas Aggleton died in this battle with
"probate" being granted on his will on the 16th June of that year.