In my ears
Tímea is a good unisex name. I think combining it with
Adelaide,
Amaryllis or
Opal as middle names gives it a heavy flow, due to the many vocals. In my opinion,
Tímea works better with these names as first names.
Sylvia Tímea and
Opal Tímea are cute combos.
I prefer
Tihomir over
Miruna with
Tímea, but meaning-wise they're both suiting.
As for the origin and earliest use, I have no idea, but I assume there have been similar names with different meanings and origins in the past.