There were several Krulish families that came through New York. The surname Krulish from my understanding is very common place in and around Prague. The Krulish name is akin to Williams, Smith, or Jones in the US. The line of Krulish in my geneology ancestry primarily stayed in and around New York City and Northern New Jersey. I have found several William Krulish listings in the census archives. Some moved to the midwest and west coast. My Grandfather met Emil Krulish who came from a different Krulish clan even though the first of the families were named William Krulish. In my research, I have found that my grandfather's grandfather may not have been named William but rather, Joseph. Good luck with your research.