Yes, according to Jain tradition, Jambuswami was the last kevalin (omniscient being) of the present time cycle (Avasarpini). He was a chief disciple of Lord Mahavira, the 24th Tirthankara. After attaining kevaljnana (omniscience), Jambuswami achieved moksha (liberation) at the age of 84 in Mathura. After him, no one is believed to have attained kevaljnana in the current time cycle.