'Sister Wives' star Meri Brown mourns the death of her older brother, Adam, in a tribute on Instagram Friday, revealing she's now the last one living of her 'original four' siblings. The reality star shares that her brother died after choosing to end chemotherapy amid his battle with cancer. Meri's eldest brother, Marc, died in 2015 due to heart issues and her younger sister, Teresa, died in 2006 also after battling cancer. Source