The phrase "a legend concerning" is correct and usable in written English.
It can be used when referring to a story or narrative that relates to a particular subject or topic.
Example: "There is a legend concerning the origins of the ancient city, passed down through generations."
Alternatives: "a tale about" or "a story regarding".
There's another plot, set in the eighteen-eighties, about a white teacher who falls in love with a black onion seller; and there's a country legend concerning an outlaw who leaves lipstick kisses on her murder victims; and a tale from eighteen-fifties Latvia involving a marriage, a pig, and a curse that ties all the stories together.
The idea for the ballet Giselle originated with French poet and novelist Théophile Gautier, who took an interest in German poet Heinrich Heine's retelling of a Slavic legend concerning the wilis, ghostly spirits of girls who have died before their wedding day.
However, excavations at the site have uncovered no evidence of a corresponding gate in the Inner Wall (now vanished) in that area, and it may be that Doukas' story is either invention or derived from an earlier legend concerning the Xylokerkos Gate, which several earlier scholars also equated with the Kerkoporta.
The Bayajidda legend, concerning a mythical Middle Eastern ancestor of the Hausa, seems to suggest that the rise of a centralized political system in Hausaland was influenced from Borno.
The legend concerning him is, that at the age of six months he addressed his father, telling him that all of Akbar's children must die in infancy, unless some child died for them.
This legend concerned a MacLeod who went on a Crusade to the Holy Land.
This legend concerns Job, a prosperous man of outstanding piety.
An ur-Victorian legend concerns the trauma suffered by John Ruskin on his wedding night, when he first caught sight of his bride's pubic hair.
Initially, Soviet authorities were hesitant to promote the legend, concerned that the players might have been Nazi collaborators for participating in that series of games in 1942, according to Tetiana Bykova, a historian at the Ukrainian Academy of Sciences who has studied the so-called Death Match.
A legend exists concerning his students: When asked by a colleague what he would do with his students, Rowland allegedly replied, "Do with them?
