A Detroit-area man who pleaded guilty to killing his mother, stepfather and his child’s mother while free on bond has been sentenced to 45-70 years in prison. Jonathan Welch of Harper Woods pleaded guilty in July to charges stemming from the deaths of the three. Welch already was in prison after being sentenced last summer to up to 30 years in prison for home invasion and torture in an attack against his child’s mother. He was free on bond in that case when the killings occurred.