To Tranckmore, Trangmar, Trankmer, Trenchmere, etc.

"Trenchmere is an instance of a linguistically French surname which arose
in a Sussex port during the late 12th century."

1174
Land at Paddington-Bray, Surrey taken from William Buffari, King Henry gave it to
Alan Trenchemer and after Alan’s death King John gives it to William de Brause.(Lord of Bramber)
1194
Alan de Trenchemer returns Richard the 1st to England in his favourite galley, “Trench-le Mer"
or "Cleave-the Sea"     (Ref:- The Story of Shoreham page117.)
1208
Alan (Junior) Trenchmere steersman and master appointed to command the Kings galleys at
Shoreham.  (Ref:- The Ships and Mariners of Shoreham page 21)
1228
Alan Trenchmere gave land in Shoreham to the Knight Templars were they erected a chapel,
which then came into the hands of the Carmalite friars of the town.
1261-1315
William and Edmund Trentmar owned land in Stepney, London.
1321-29
Isabel Tranchemier widow of Robert Trenchemer. (Ref:- Lewes Chartulary vol ii page 54)
1330
Simon Trenchmere house in New Shoreham   (Ref:- The Story of Shoreham page 87)
1370
Richard Trenchmore mentioned in Manor of Cowfold records
1460-85
Tranchmere Churchwarden at Cowfold   (Ref:- W.S.R.O. Card Index)
1554
Clement Trensmore juror at West Wittering on the 24th May
1605
Robert Tranckmore, Arms of the Shipwrights company of London, granted.   
(Ref:- The Story of Shoreham pages 32, 148)
1626-38
"Few of the builders are recorded as building as much as a ship every year; the largest
John and Matthew Graves of Limehouse, Robert Trankmere of Shoreham, and Zephaniah and
John Foord of Ipswich each built 12-15 ships of something over 3,000 tons in these 12 years.
(Ref:- The Rise of the English Shipping Industry page 55)
1634
John Tranckmore master of the “Shoreham” transports ten lasts of powder to Ireland  
(Ref:- The Story of Shoreham page 149)
1649
Robert Tranckmore Churchwarden for Popular (London) from New Shoreham, Sussex.