John Peterson, 91, of Willow Lake, passed away on March 11, 2026, at the Estelline Care Center.  Visitation will be held on Tuesday, March 17, 2026, at the Grace Lutheran Church in Willow Lake from 5:00 until 7:00 p.m.  Funeral services will be held on Wednesday, March 18, 2026, at 11:00 a.m., also at Grace Lutheran Church in Willow Lake.  A meal and time of fellowship will follow burial at Collins Cemetery in Willow Lake.