Thank you for your long and thoughtful response, Arora. The questions that were not answered, however, remain unanswered. First I asked how the project was distinguishing between the uses of 1) an actual surname which is also a tribal name and 2) a tribal name placed in the LNAB field when the person doesn't have a surname. If we are suggesting that we need to clarify in the biography that the name used in the LNAB field is an actual surname, we should need to do that for Smith, Johnson, and Jones. "Jones is the actual surname," should be placed in bold at the top of every Jones profile. Putting an actual surname in the LNAB field is how the field was intended to be used. To have us clarify that an actual surname is an actual surname means that we are treating some people who happen to have a certain national origin differently. It should be on the project to clarify the different use of the LNAB field whenever it is used for something other than the LNAB (like the name of a tribe). So the first question remains unanswered: How is the project distinguishing between different uses of LNAB when a tribal name may be an actual surname or may be an inserted tribe for a person who does not have a surname. I have not yet heard or understand why a standard could not be used to clearly indicate the different use of the last name field for some Wikitree profiles that represent people of certain national origins. My second question has to do with the claim that putting a tribal name in the LNAB field prevents duplicates. How? Since a writer can stuff the LNAB field with any one of the variations of a tribal name, Equayzaince - who has no surname - could be entered as Equayzaince Ojibwe, Equayzaince Ojibwa, Equayzaince Ojibway, Equayzaince Chippewa, and Equayzaince Anishinaabe. Kabupi - who has no surname - could be entered as Kabupi Sisseton, Kabupi Dakota, and Kabupi Sioux. So my second question is: How does that prevent duplicates? If American Indians/Native Americans are to be categorized, then categories, not the LNAB field, should be used. An easy solution that would take no programming and is already being used by many more Wikitree-ers than myself is to place "No Surname" in the LNAB field. True - it is not a surname, but it is more clearly not a surname than is Dakota or Chippewa or something else, and it solves a problem. I would be happy to explain in the biography why "No Surname" is in the LNAB field. And it makes it MORE likely that duplicates of Equayzaine and Kabupi will be found. My questions remain unanswered.