- This character is a member of Quark's family.
Keldar was a Ferengi male, the husband of Ishka and father to Quark and Rom. While he was never very successful at making profit or understanding the Ferengi Rules of Acquisition, he was known for being a great husband and father. (DS9 episode: "Family Business")
When Keldar died, Quark and Rom were both relatively young. When Quark opened his legacy chest he found dozens of headskirts. Quark discovered the headskirts dated back many years and were worn by survivors of floods, financial collapses, earthquakes and other disasters to have taken place on Ferenginar. Quark realised that his father was teaching him an important lesson - despite tragedy, Ferengi can always make profit. (DS9 novel: Legends of the Ferengi)
Whenever Quark had dealings with Klingons, he would follow their tradition and introduce himself as "Quark, son of Keldar". (DS9 episodes: "The House of Quark", "Looking for par'Mach in All the Wrong Places", "Shadows and Symbols", DS9 short story: "... Loved I Not Honor More")