Trish Wellington grew up in Washington with her parents, Thomas and Vanessa Wellington. She also has a sister named Shea. Her family is quite wealthy. Their mother died. She spent summers on Harper's Island and met Henry Dunn. They broke up later and Trish dated Hunter. Trish's father remarried. Her stepmother's name is Katherine. She is going to marry Henry on Harper's Island, but Mr. Wellington disapproves of him.