Details here
As for the location and places Neil has already covered those in his post containing the interactive map!!

https://en.wikipedia.org/wiki/Red_Sails ... set_(song)
"Red Sails in the Sunset" is a popular song. Published in 1935, its music was written by Hugh Williams (pseudonym for Wilhelm Grosz) with lyrics by prolific songwriter Jimmy Kennedy. The song was inspired by the "red sails" of Kitty of Coleraine, a yacht Kennedy often saw off the northern coast of Northern Ireland and by his adopted town Portstewart, a seaside resort in County Londonderry.
The title of the song provides the inspiration for the Red Sails Festival held annually in Portstewart, Northern Ireland. Kennedy wrote the song while staying in Portstewart.
Perhaps an entry in our deliberations for the town of Limavady needs posting. Not sure if New Tow is a separate settlement or indeed if Jane Ross gets a blue plaque for preserving the tune which acts as an anthem for Northern Ireland.Ross submitted the tune to music collector George Petrie, and it was then published by the Society for the Preservation and Publication of the Melodies of Ireland in the 1855 book The Ancient Music of Ireland, which Petrie edited. The tune was listed as an anonymous air, with a note attributing its collection to Jane Ross of Limavady.
For the following beautiful air I have to express my very grateful acknowledgement to Miss J. Ross, of New Town, Limavady, in the County of Londonderry—a lady who has made a large collection of the popular unpublished melodies of the county, which she has very kindly placed at my disposal, and which has added very considerably to the stock of tunes which I had previously acquired from that still very Irish county. I say still very Irish, for though it has been planted for more than two centuries by English and Scottish settlers, the old Irish race still forms the great majority of its peasant inhabitants; and there are few, if any counties in which, with less foreign admixture, the ancient melodies of the country have been so extensively preserved. The name of the tune unfortunately was not ascertained by Miss Ross, who sent it to me with the simple remark that it was 'very old', in the correctness of which statement I have no hesitation in expressing my perfect concurrence.
This led to the descriptive title "Londonderry Air" being used for the piece.
Relax, congratulations to the "blue Plaque" peopleNewcastleFalcon wrote: 28 May 2022, 19:23
Perhaps an entry in our deliberations for the town of Limavady needs posting. Not sure if New Town is a separate settlement or indeed if Jane Ross gets a blue plaque for preserving the tune which acts as an anthem for Northern Ireland.