I'm not sure if that's our George in the 1920 census. His wife is listed as Anny.
Karen Haskett Wenick seemed pretty sure on that thread on ancestry.com that her grandfather George was Martin's brother. And she lists Nellie as her grandmother, so that seems like it could be the key. The records for George and Ellen seem to stack up, so we could be onto a winner here. The dates are a little out, but I would expect that for the time. I replied to Karen's message back in August, but I haven't heard anything back yet.
The only thing that confuses me is the sister in law "Christine" from Martin's port entry record in 1902. Her name ("Wistergard"?, "Waterford"?) would have been "Haskett" if she was married to Martin's brother George (or indeed any other brother). This confuses me. Unless Martin himself was married, and his wife's sister was named Christine? That would make her his sister in law. But I don't know of any marriage records for Martin, either in Ireland or in NY. Another piece of the puzzle!
A little more information on the family:
George Haskett (Senior) married Anne Ryan Feb 1961 (Ballina, Co. Tipperary)
Michael (b. May 1864)
Patrick "George" (b. 1866) (lived in NY)
James (b. 1868)
Mary-Ann (1870 - 1871) died at 11 months old
Martin (b. Nov 1972) (lived in NY)
David (b. Aug 1876) (stayed in Ireland, my great grandfather)