Sir Joseph John (JJ) Thompson, Mancunian physicist, won the Nobel Prize in 1906 for proving that the electron was a particle; in the context of the time, he received it for implying that it was not a wave.

Thirty years later, his son, George Paget Thompson, won the prize for proving that the electron was a wave.

A writer once suggested-- humorously, to be fair-- that breakfast at the Thompson table was probably a frosty affair for a while.

But I suggest the opposite-- that all scientists know that sooner or later, a refinement of the theory that they created or the work that they did will occur, and since it has to happen, there is no greater joy in knowing that it was your own children who did it.