Keldar

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. 

Keldar once conforted Rom when his son was in debt to an older child. Keldar tried to reason with the father of the boy, although he was unsuccessful. 

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 Keldar was teaching Quark that despite tragedy, Ferengi can always make profit. 

Whenever Quark had dealings with Klingons, he would follow their tradition and introduce himself as "Quark, son of Keldar". (, SS DS9 (... Loved I Not Honor More))

In 2371, Quark told Rom that Keldar would be proud to know Rom had embezzled money from Grand Nagus Zek.