Quakers like my grandpa said Thee to family and other Quakers.
I still wonder what people thought as You took over from Thee. Whippersnappers being cold and distant, probably.
Hungarian has 4 grammatical levels of politeness: regular conjugation 2nd person singular (like Tu) for peers, children, animals, gods; a self-type of conjugation (like And how is himself today?) for showing respect to social inferiors like street sweepers; regular 3nd person conjugation for kids-to-adults or work colleagues etc, and a "pleases" 3rd person like Does it please to come this way) for old folks. I have gotten into trouble with these.