Daniel Lourenco, 44, and Jennifer Lourenco, 45, were pronounced dead at the scene, and their 16-year-old daughter, Madelyn, died later at a hospital. The Lourencos’ son, Matthew, died Thursday night. His organs were donated as a gift of life for others, McClelland said.

The four people killed in a Turlock collision on Sunday morning were identified by the Stanislaus County Coroner’s Office. Daniel Lourenco, 44, Jennifer Lourenco, 45 and Uriel Guizar-Negrete, 22, were declared dead at the scene of the collision. The Lourencos’ 16-year-old daughter, Madelynn, died later at a hospital.

A broadside collision on Sunday killed four people, including three members of a Turlock family, according to the California Highway Patrol.

Jennifer Lourenco, a teacher at Sinclear Elementary School in Ceres, was one of four people killed in a crash in Turlock, according to the school district.