Another place this imagery appears is in the catacombs and in other burial places. See this image
This appears in the center of the ceiling of the "Velatio" cubicle in the Catacomb of Priscilla in Rome.: the Good Shepherd (also sheep and doves with olive branches in trees). It dates from the second half of the 3rd century.
Here is a modern "shepherd" image that I love. It's by Jeremy Lundmark.
Birth and death are both times when it can help us to remember that the Good Shepherd leads us not only on the mountain of life, but also through the valley of the shadow of death. Below is a 2011 performance by the Wells Cathedral Choir, Somerset - under the direction of Matthew Owens- of Howard Goodall's very beautiful setting of the Twenty-Third Psalm. May you be blessed.