Question: When did Nino, Princess Of Mingrelia's husband die?
Sentence (from "Grigol Dadiani"): Grigol Dadiani (1770 – 23 October 1804), of the House of Dadiani, was Prince of Mingrelia from 1788 to 1804, with intermissions from 1791 to 1794 and in 1802 when his position was filled by his rivaling brothers.
Relevant evidence: Yes