(CNN) -- A court in Taiwan has sentenced the island's former first lady to a year in prison for lying to prosecutors in her husband's corruption case.

Wheelchair-bound Taiwan former first lady Wu Shu-chen leaves a hospital in Panchiao, Taiwan, in May.

Wu Shu-chen was convicted on charges that she helped her son, her daughter and her son-in-law provide false testimony in the wide-ranging trial of her husband, Chen Shui-bian, the national Central News Agency said Tuesday.

The others were each sentenced to six months in jail.

The former president's corruption trial -- the first for a former head of state -- began in March and has gripped the island for months.