Ok but Funk dictio, how doth one use 'thon' elsewise??
They, them, their: They gave them their sleeve.
Vey, vem, ver: Vey gave vem ver sleeve.
Thon, ?, ?: Thon gave thon thon's sleeve, mayhaps?
En español, Spanish: aquí, allí, allá.
日本語に, Japanese: この [ko no]、その [so no]、あの [a no].
In l'anglaise, English: here, there, thon [that yonder].
https://www.merriam-webster.com/wordplay/third-person-gender-neutral-pronoun-thon
"How may I address you?" Just a great phrase and intent all-around. Good clear communication and obvious demonstration of intent (unless espionage or subterfuge, but unlikely for most).