In Listen, the Doctor and Clara meet Orson Pink, who, according to Clara, looks similar to Danny Pink. (Both Danny and Orson are played by Samuel Anderson.)
Another clue is Orson mentioning about his great-grandparents telling "silly stories" about time travel. Also, the Doctor and Clara manage to reach Orson's location using the telepathic circuits of TARDIS.
At first, this scene gives an idea that Clara and Danny marry and have children that in a future generation would give birth to Orson Pink. Then, in the Series 8 finale episodes, Danny Pink "dies" and, when given the chance to come back to the real world, sends the Afghan boy Danny kills in a war (possibly the 2001 War in Afghanistan?) to Clara, potentially killing the idea that Orson is related to Danny and Clara.
But the question remains: is Orson Pink a descendent of Clara Oswald and Danny Pink?