1970 Divorces Maureen, and marries second wife Ann Gruber, a teacher in Midlothian, who has a daughter from a previous relationship. The marriage lasts 16 years and the couple have three children.
1986 The couple divorce.
1988 Walker marries his third wife Diane and the couple stay together until 1996. The couple divorce two years later.
2007 Enters politics by taking up a seat on Fife Council as SNP Councillor for West Fife and Coastal Villages.
2011 Becomes MSP for Dunfermline.
March 2012 The Sunday Herald breaks the news of Walker's violent past after he appears in the press welcoming a grant for the Women's Aid Charity in his constituency. Two of his wives come forward with tales of years of domestic abuse.
April 2012 Already suspended from the SNP following the domestic abuse allegations, Walker is expelled from the party.
June 2012 Police announce his arrest.
July 2012 Walker's court case begins.