On-line trees should be used to refer you to sources, and the information you add to your tree should derive from the source, not the reference. An un-sourced item in a tree simply cannot be trusted. There are exceptions, of course, if an online tree is one you trust for some good reason, but they are rare.
By the way, "Fite" as a variation of "Vogt" gives you another clue about potential misdirections. My earliest known ancestor (circa 1588) appears in the church book of Lauterecken (not far from Saarbrucken). His name is Feÿ (ending in a y with a double-dot over it). The y-double-dot character is a handwritten form of the letters i and j, so the modern Dutch name Feij, which goes back many centuries, is probably the same name. It may be derived from the same ancient name that developed in France as deFoye and/or Foye. As I'm sure we all know, people at the time the name was first recorded wrote it as it was pronounced, so Foye must have originally have been pronounced something like "Fo-yeh" or "Fu-yeh". Feij might have been "Feh-ee-yeh". In Holland today Feij is pronounced "Fie" as in sky or pie. This theory is supported by the fact that German pastors in the various decades, writing in church books, spelled the family name Veig, Veit, Feig, Feit, Feeg, and Veeg, but most often as Feÿ. Land records in Frederick, Maryland, show the same variability, clerks unfamiliar with the somewhat rare name writing what they hear. Clearly the name as spoken until about 1800 ended with a harder consonant than the soft "y" it ends with now. The point being, as you scour sources, be prepared to investigate even the wilder-sounding variations on the name.