These do not refer to a specific person. It means these types of people in general. Alternate translation: "your sons, your daughters, your male servants, your females servants, any Levite" (See: [[rc://en/ta/man/jit/figs-genericnoun]])
This refers to these types of people in general. Alternate translation: "all foreigners, orphans, and widows" (See: [[rc://en/ta/man/jit/figs-genericnoun]])
Here the phrase "his name" refers to God himself. Yahweh will choose one location where he will live and people will come to worship him there. See how you translated this in [Deuteronomy 14:23](../14/23.md). Alternate translation: "have his people build the place where they will worship him" (See: [[rc://en/ta/man/jit/figs-metonymy]])