Donatella Una

In 1986, Donatella met the man named Solido Naso while in vacation in Sardegna. They became lovers but Solido Naso suddenly disappeared without warning or trace.

She subsequently gave birth to Trish and both lived in a small room for the next 15 years. She fell ill and before she died, Donatella tried to search for Solido Naso which Diavolo noticed, starting a struggle between Passioneloyalists and the rogue La Squadra di Esecuzione to find Trish Una. Donatella finally died of illness in a hospital of Calabria.
(Source: JoJo's Wiki)