 Meri , Robyn , and Christine were all raised in polygamist families , but Janelle was not . Although Christine 's mother left the faith she still supports them . Months before the marriage of Janelle and Kody , however , Janelle 's mother entered into a polygamist marriage with Kody 's father . The Brown family belongs to the Apostolic United Brethren ( <unk> . ) For years before the series , the family kept their polygamist lifestyle what they called a " quasi @-@ secret " . 
