I wrote down several Palletts from the National Archives a few years back and I just came across it again.These were listed as Philadelphia arrivals:
George Pallett 1831 Mary Pallett Benjamin Pallett 1841 Caroline Pallett Charles Pallett Elizabeth Pallett John Pallett Robert Pallett Robert Pallett Sarah Ann Pallett William Pallett
There's is more info I wrote down about them.Please email me if you would like the information. None of these Palletts are ancestors of mine though. Mine are of Wasnington County Pennsylvania emigrating from England before 1800.