In the 1910 census for Brooklyn, Webb Short gives his age as 45 (so date of birth c1865) but he gives his place of birth as New York (not Wales or Ireland).
He also gives the place of birth of both of his parents as New York. He was a Stone Cutter and was living with son Clarence, age 5, but no wife is present.
Apart from this 1910 census I can't find any trace of "Webb Short" in the USA or Europe!
On the 1920 census for Brooklyn, Clarence Short is living at the St. John's Home, which appears to be an orphanage, but it gives the place of birth of both his parents as Ireland. He was at St. John's in 1915 also.
On the 1930 census for New York, Clarence in married and then gives the place of birth of both his parents as New York! Confusing!!!
I did find a family a long way up the Hudson river in Saugerties, but here Webster Short, of roughly the same age, is a farmer, although two of his sons are in the stone quarrying industry??? But this Webster is on the 1910 census in Saugerties. Could he have been living a double life???