Italian word estate comes from Proto-Indo-European *h₂ey-dʰh₁-, and later Latin aestas (Summer.)
*h₂ey-dʰh₁- (Proto-Indo-European)
aestus (Latin)
(figuratively) hesitation. (figuratively) passion. Fire. Heat. Surge of the sea. Tide.
*aissāts (Proto-Italic)
aestas (Latin)
Summer.
estate (Italian)