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Are there any examples of neopronouns for non-binary or third gender people being fully incorporated into a language's grammar?

Many [non-binary people](https://en.wikipedia.org/wiki/Non-binary_gender) now request that [new third person pronouns](https://en.wikipedia.org/wiki/Third-person_pronoun#Summary) (neopronouns) be used to refer to them, for example *xe* or *ze*. These have not been widely used by English speakers yet, but it's still too early to say whether they might in the future.

Non-binary gender is a fairly recent concept for many people in western societies, but other societies have long had similar concepts, which anthropologists have termed [third gender](https://en.wikipedia.org/wiki/Third_gender). Note that not all those who would identify with one of these would identify with the western terms transgender or non-binary gender.

Seeing as these [third gender](https://en.wikipedia.org/wiki/Third_gender#History) ideas have been around for thousands of years, I would like to know if there are any languages which have fully incorporated (ie, fully grammaticalised) neopronouns for non-binary or third gender people? I am specifically interested in pronouns that are used strictly for non-binary or third gender people, and not ones that are also used in a generic or indefinite manner (as the singular *they* is in English.)