Which character in "The Crucible" has lost seven children?

Ann Putnam lost seven babies on the night each of them was born. Ruth, her only living child, has become sickly and "secret."  Believing that this sickness, as well as the deaths of her seven babies, is the work of the devil, she sends Ruth to Tituba, a slave woman known for her ability to "speak with the dead."  Mrs. Putnam now believes that Ruth's proximity to the spirits of her dead siblings has caused her to be struck dumb as she now is. 

Even though Mrs. Putnam knew conjuring up the dead was considered a sin in the Puritan community, her grief and desperation led her to do what she consciously knew was wrong.  Abigail verifies that Tituba and Ruth were the ones communing with spirits, meaning witchcraft.