NEPHI?Polygamist Tom Green was convicted of child rape Monday for impregnating one of his wives-to-be when she was 13.

District Judge Donald Eyre took just 30 minutes to find Green guilty for his relationship with Linda Kunz, who is now his wife. The trial lasted about an hour. Green could get up to life in prison at sentencing Aug. 16. a

Green, who has four other “wives” and 30 children in all, already is serving five years for bigamy and other charges. He was convicted last year in Utah’s biggest polygamy case in five decades.

For the case, prosecutors submitted Kunz’s 1973 birth certificate and the 1986 birth certificate of her first child. In the child-rape case, prosecutors submitted Kunz’s testimony from previous hearings.