Sculptures of cherubs often adorn the graves of children. Here, is an example found in the Greenwood Cemetery in New Orleans, Louisiana, on the top of a family tomb commemorating the grave of a five-year-old boy.  The chubby angel above lays on the tomb sleeping.

Cherubim are one of nine orders or choirs of angels which are organized into three spheres, with three choirs in each sphere.  According to Christian tradition, the first sphere, which is made up of the Seraphim, Cherubim, and the Thrones, are considered the closet to Heaven. 

In Ezekiel 10:14, the Cherubim are described as having four likenesses or four faces, “And every one had four faces; the first face was the face of a cherub, and the second face was the face of a man, and the third the face of a lion, and the fourth the face of an eagle.” 

The Cherubim were to be guardian angels.  This angel sleeps instead.