Del Mar means island (isolated) in the sea (of homophobia, pain, loneliness) but mar also means damage (noun and verb), and Ennis certainly was damaged and never escaped it, and caused more himself, though never intentionally.
Great observation concerning the double meaning of Del Mar!
Of course, it made me think of the double meanings of
"Twist". Except there aren't only double meanings, but rather ten times double meanings. Now as far as I know, the name was used by AP because it is related to a rodeo rider's movement while on the bull. But in addition, any brief look at a dictionary would give the following other meanings that could also be relevant for Jack (in addition to a heap of others, that I couldn't immediately connect to him....)
* To wind together so as to produce a single strand
* To coil about something
* To interlock or interlace
* To turn so as to face another direction
* To turn or open by turning
* To wrench or sprain (........can you twist a heart??)
* To alter the normal aspect of
* To alter the intended meaning of
* A personal inclination or eccentricity; a penchant
* A dance characterized by vigorous gyrations of the hips and arms
* An unexpected change in a process or a departure from a pattern: a twist of fate; a story with a quirky twist.
In addition, I recall that when I first joined the BBM fandom, there was some slight grumbling because some people took the "Twist" name to be hinting at something twisted, ie. unnatural - or as the dictionary would define it: "To alter or distort the mental, moral, or emotional character of." How weird that anyone could see the film or read the story and chose to interpret the name that particular way.....