on august 19, 1864, with his remaining guerrillas facing serious supply problems and suffering from hunger, định was betrayed by a former follower huỳnh tấn and ambushed by french forces. wounded and facing imminent capture, định used his sword to take his own life. his 20-year-old son truong quyen (1840–1870), attempted with modest success to carry on his father's struggle. a new base was set up in tây ninh. it allowed more room for tactical manoeuvring but still depended on supplies being carried north from tan hoa. quyen was eventually killed and in 1874, long after the southern insurgency had been crushed, tự đức granted a monthly allowance in grain and cash to định's widow le thi thuong, who had returned to her native village in quảng ngãi, which at the time was still in independent vietnamese territory. the ration of 20 francs and 60 litres of rice was substantial, because the monthly salary of a ninth-rank mandarin was only 18 francs and 48 litres of rice.