Looking for the Sangaline Family in Saugerties

German immigrant Peter Sangaline was known to be living with his wife Margaret and children in Saugerties, Ulster County, New York from the early 1870s until after 1910.  Searching through the federal census records online, I initially could not find them. I searched both ancestry.com and Heritage Quest hoping to find a match in at least one of those sources. I just could not find them even if I varied the spelling. The German spelling might be Zangline, but no luck there either.