朴: Simple, unadorned. It metaphorically refers to being unembellished and genuine. A surname.
纳:
"Income, originally meaning 'to take in,' when used in personal names, signifies a person with an inclusive heart, broad-mindedness, and a willingness to heed others' opinions."
Meaning: The name has a harmonious rhythm, conveying a sense of simplicity, naturalness, and a steady, introverted character.