A Ukiah man has been convicted of ongoing sexual abuse of a child. A Mendocino County Superior Court jury found Henry Robert Frahm Rinne, 49, of Ukiah, guilty of the abuse that occurred from June of 2016 to August of 2018, when the victim was between the ages of 8 and 10. Rinne is expected to be back in court today for a court trial on aggravating factors. Once that has finished, sentencing recommendations will be considered and Rinne will be assigned a prison term.