A scion of a storied San Francisco restaurant dynasty known for its literary and political ties died suddenly in Greece at only 41 years old.

The devastated family of Sydna Konstin, co-owner of the famed downtown haunt John’s Grill, confirmed her death in an obituary published Thursday.

Konstin, daughter of John’s Grill co-owner John Konstin, had been living in Athens after growing up in the San Francisco Bay Area.

The cause was heart failure, her family said.

She was a third-generation proprietor of John’s Grill, a 118-year-old Union Square restaurant known for its steaks, cocktails and massive Election Day block parties that draw thousands of…

Read the full article at NYPOST.COM