Margaret Ann O'Brien Obituary

We are sad to announce that on December 12, 2023 we had to say goodbye to Margaret Ann O'Brien of Sioux Falls, South Dakota, born in Washington, District of Columbia. You can send your sympathy in the guestbook provided and share it with the family.

She was predeceased by: her parents, William O'Brien and Marjorie O'Brien (Sullivan); her husband Terry; and her nephews, Michael and Collin O'Brien.

She is survived by: her granddaughter Clara Beth; her daughter Mackenzie Keegan of Sioux Falls, SD; her granddaughter Clara Beth Keegan of Sioux Falls, SD; her stepchildren, Brian Keegan (Kristi) of Brandon, SD and Jennifer Keegan of Boise, ID; and her brothers, Stephen O'Brien (Adrienne) of Sioux Falls, SD, Sean O'Brien of Pierre, SD, Mark O'Brien of Sioux Falls, SD and Brendon O'Brien (Annette) of Sioux Falls, SD.