With Finnegan, we started with the nickname Iggy (Iggy and the Stooges), but I refused to name my kid Ignatious, so we settled on Finnegan, a nod to Joyce's novel. He doesn't like Iggy anymore, and goes by Finnegan.
With the second we decided to carry on the literary tradition and went with Huckleberry. He likes being called both Huck and Huckleberry, though once he starts kindergarten I think he'll stick with just Huck because it is easier for him to spell. Not to worry though, they both have very common middle names, so if they want they can go by those. I wanted them to have options. But we haven't met any other Finnegans or Huckleberries, and the kids seem to like that their names are unique.
With the second we decided to carry on the literary tradition and went with Huckleberry. He likes being called both Huck and Huckleberry, though once he starts kindergarten I think he'll stick with just Huck because it is easier for him to spell. Not to worry though, they both have very common middle names, so if they want they can go by those. I wanted them to have options. But we haven't met any other Finnegans or Huckleberries, and the kids seem to like that their names are unique.