Thomas Parke D'Invilliers is both a pen name of F. Scott Fitzgerald and a character in his quasi-autobiographical first novel, This Side of Paradise.
In the novel, which is more or less a roman à clef, D'Invilliers represents the poet John Peale Bishop, a friend of Fitzgerald's at Princeton and a member of the 1917 class.
The epigraph on title page of Fitzgerald's The Great Gatsby features a poem ostensibly signed by D'Invilliers, called from the first hemistich Then Wear the Gold Hat.
You can help Wikipedia by expanding it.See guidelines for writing about novels.
Further suggestions might be found on the article's talk page.