Almost a half-century after the death of China’s last emperor, his last surviving sibling, Jin Youzhi, died on Friday in Beijing. He was 96.

Jia Yinghua, a historian of China’s last imperial family, confirmed the death.

Mr. Jin, a retired primary school teacher, was the half brother of Henry Pu Yi, China’s last emperor. Their Manchu dynasty ruled China for 268 years, until a republic was established in 1912.

“His death marks the end of an era in Chinese history,” Mr. Jia said in an interview on Monday.

Mr. Jin was a great-grandson of the Daoguang Emperor, who ruled China between 1820 and 1850, and a nephew of the Guangxu Emperor, who reigned from 1875 to 1908. He was born in Beijing on Aug. 17, 1918, six years after Pu Yi abdicated.

At the time, his family lived in a princely residence north of the Forbidden City and enjoyed privileges negotiated in an agreement with the young Chinese republic.