Baby Boy Brady-Hathaway was the late son of Bo Brady and Megan Hathaway.
Background

Baby Brady-Hathaway Parents Megan Hathaway and Bo Brady.
Baby Boy Brady-Hathaway was conceived during a high school affair between Megan and Bo when Megan was sixteen years old.

Megan told Bo she was pregnant with their son Baby Boy Brady-Hathaway and confirmed she was sixteen at the time of conception.
Megan mother wanted her to give the baby up for adoption when she was just a teen.
Bo find out Megan was pregnant when she returned to Salem and Bo believed their child was place up for adoption.

Megan hugs Bo wishing they could've raised their child, their son Baby Boy Brady-Hathaway together unknown to Bo she had a miscarriage due to a botched abortion.
Megan found she was pregnant with a son due to a botch Abortion Megan miscarried their son.

Megan had a abortion but it was a botched and found it she was having a son and due to a botched abortion She had a miscarriage early into the pregnancy and Bo was heartbroken.
Bo continued to search for the child that he believed Megan gave up for adoption but little he did he know Megan was setting him up she actually lost their son due to miscarriage and trick Bo into believing the child lived and was going to kill a woman Diana and take her son to raise and the child they found wasn't his child and Bo gave Diana back her son and Megan was angry and plotted to killed Hope because she was jealous unfortunately Megan was killed by Larry Welch during a struggle and hit her head against the wall and died but Hope was framed for the murder and was cleared.
Baby Brady-Hathaway was the first grandchild of Stefano DiMera and unfortunately the first deceased grandchild.