Mark Short was a resident of Sinking Spring, Pennsylvania. He was the husband of Megan Short and had three children.

On August 6, 2016 Mark and the bodies of Megan Short, and their three children, all with gunshot wounds, were found in their Sinking Spring, Pennsylvania Winding Brook Drive home. Authorities believe it appeared to be a murder-suicide.

Authorities found a handwritten murder suicide note next to one of the deceased parents, as well as a gun.

The district attorney’s office is leading an investigation into the deaths with assistance from police from Sinking Spring and Spring Township.

The couple had domestic issues.

Mark's youngest child Willow Short was born with a defective heart and had to have heart surgery at only three days old. Megan Short suffered from Posttraumatic stress disorder from the challenges of caring for her daughter.

After Megan's heart transplant in 2014 both Megan Short and her husband Mark became advocates for organ donation.

Willow had hypoplastic left heart syndrome, a rare congenital birth defect, while a fetus Willow's heart was not fully formed and could not pump blood efficiently, threatening her life.

When Willow was three days old, she underwent her first open-heart surgery as doctors worked to repair her left ventricle and redirect her circulation.

During surgery, doctors found a tunnel defect and following the procedure, she bled so much she required 16 blood transfusions.

Willow was placed on a heart-and-lung bypass machine and was added to the National Transplant List, with her survival depending on a donation of another baby's heart.