Here's the tune for completeness. A quick check of Roud finds no entry for the first line. I'll try and have a more thorough look later.

Mick

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X: 1
T:Admiral Nelson
M:4/4
L:1/4
B:The English Folksinger - Sam Richards & Trish Stubbs, 1979
K:Ddor
N: Notes from The English Folksinger:
N: Source unknown. THis vivid ballad of Trafalgar turned up in an old book
N: in a library in South Devon. Unfortunately, attempts to re-locate it have
N: been unsuccessful.A note in out papers, written when the song was copied,
N: attributes it to one Dick Tremuan, a street ballad singer of Plymouth who
N: claimed to write all the songs he peddled. However unknown source is no
N: excuse for ignoring one of the best songs of the Napoleonic Wars that we
N: have come across so far.
G|A D (E/F/) G| (F/E/) D2
w:Draw nigh my friends_ and neigh_bours,
A| d> e c B| A3
w:Good news to you I'll bring.
A| d> e c B| A2 c
w:The fame of Admi-ral Nel-son
d| A> c E G| D3 |]
w:From shore to shore to sing.