13 Egeria
Egeria was named by Urbain Le Verrier , whose computations led to the discovery of Neptune , after the mythological nymph Egeria of Aricia , Italy , the wife of Numa Pompilius , second king of Rome . 
<triplet> Neptune <subj> Urbain Le Verrier <obj> discoverer or inventor <triplet> Egeria <subj> Numa Pompilius <obj> spouse