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For years, Anna Sorokin dreamed of being someone else. A Russian immigrant with aspirations of becoming a member of Manhattan’s upper society, Ms. Sorokin hopped around Germany and Paris before finally coming to New York in 2014.

But she arrived with a new identity: that of a wealthy German heiress with a trust fund worth 60 million euros. She came up with a new name, Anna Delvey, and lived under that identity as she bilked banks, hotels, restaurants and a private jet operator out of more than $200,000 — and aimed to get millions more, according to prosecutors.

Following a monthlong trial, a jury in Manhattan on Thursday found Ms. Sorokin guilty of second-degree grand larceny, theft of services and one count of first-degree attempted grand larceny.

She was found not guilty on other charges after being accused of providing falsified documents in an attempt to secure a $22 million bank loan, and of stealing some $60,000 for a lavish trip to Marrakesh, Morocco.