A woman who died in Italy last month has left her beloved pet cat a whopping $13.5 million (€10 million) fortune in her will.

According to a lawyer for Maria Assunta, under Italian law, Tommaso —also known as Tommasino — is not entitled to inherit the money directly.

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Newly minted millionarie Tommaso is living with his owner's nurse outside Rome.

But the former stray's owner was able to name a trustee to care for the black male kitty. That person has only been identified as Stefania, the 94-year-old woman's nurse.

Lawyer Anna Orecchioni told Rome's Il Messaggero newspaper that Stefania met the older woman in a park and was hired to take care of her.

"[Assunta] had become very fond toward the nurse who assisted her," Orecchioni said.

Assunta had no living relatives.

Her nurse is quoted by Britain's Daily Telegraph as saying she had no idea Assunta was so wealthy.

"The old lady suffered from loneliness," Stefania said. "She looked after that cat more than you’d look after a son.

"I promised her that I would look after the cat when she was no longer around. She wanted to be sure that Tommaso would be loved and cuddled. But I never imagined that she had this sort of wealth," she said.

Tommaso and Stefania, who takes care of a second cat, are living outside Rome at an undisclosed address.