"Their Child" is a novel written by Robert Herrick, an American author known for his novels and short stories that often explore themes of romance, family dynamics, and societal issues. Unfortunately, there's no information available about a novel titled "Their Child" by Robert Herrick. It's possible that this title is either obscure or doesn't exist in Herrick's bibliography.However, based on the title alone, one might speculate about the potential themes and plot of a novel called "Their Child." It could explore the complexities of parenthood, family relationships, and the responsibilities and challenges of raising a child. The story might follow the journey of a couple as they navigate the joys and struggles of parenthood, facing various obstacles and learning important lessons along the way.