LAHORE (AFP) - The family of Pakistan's disgraced former captain Salman Butt was so grief-stricken Friday over his 30-month sentence for corruption in Britain that it postponed his sister's wedding. His father said his lawyers would file an appeal in London on Friday, but that he was ready to die if his son's guilt is proven. Unlike the 19-year-old M Aamer, whom the judge said he corrupted, Butt grew up in relative luxury in the eastern city of Lahore, the eldest of three children born to Zulfikar Ali Butt, who runs a farming business. His father told AFP his son's conviction was a "big tragedy" for the family and that as a result, he had been forced to postpone his 22-year-old dentistry student daughter's impending nuptials. "She was scheduled to marry in Lahore this month, but it has been postponed because the family is in a state of shock," he said. "Her in-laws understand our grief," he added. Butt's sisters on Thursday alleged that their brother had been made a scapegoat for a wider conspiracy and was innocent. "If Salman's involvement is proved and evidence is provided that he took money, I tell the nation that my son Salman and I are ready to be hanged publicly," Zulfikar said. "I have brought up my children never to do such a thing." Zulfikar described his son as a "practising Muslim who prays five times a day" and said he was in Saudi Arabia on pilgrimage when Salman telephoned to say that he had been charged after the Lord's Test against England. "I immediately asked him: Tell me on oath how much are you involved in this scam? He swore that he was not involved. My son does not tell lies. He is very kind and helpful. He never fought with anyone. He is a good natured person. He has been trapped in a controversy just to malign the game of cricket and Pakistan. Two other bowlers were also involved because they performed well. The assets of our national team have been sent to jail under a conspiracy."