(Portland, OR)  --  A man who pleaded guilty to killing his aunt is headed to prison for at least 30 years.  Thirty-seven-year-old Teddy Stivahtis Jr. was given a sentence of life with the possibility of parole for the aggravated murder of Deanna Stivahtis in October 2014.  Authorities say the victim's death happened while her nephew was robbing her home in Gresham.