Genealogy
According to Plutarch, Numa was the youngest of Pompos's four sons, born on the day of Rome's founding (traditionally, 21 April 753 BC). He lived a severe life of discipline and banished all luxury from his home. Titus Tatius, king of the Sabines and a colleague of Romulus, gave in marriage his only daughter, Tatia, to Numa. After 13 years of marriage, Tatia died, precipitating Numa's retirement to the countryside. According to Livy, Numa resided at Cures immediately before being elected king.
Livy and Plutarch refer to and discredit the story that Numa was instructed in philosophy by Pythagoras, as chronologically implausible.
Plutarch reports that some authors credited him with only a single daughter, Pompilia. Pompilia's mother is variously identified as Numa's first wife Tatia or his second wife Lucretia. She is said to have married the future first pontifex maximus Numa Marcius, and by him gave birth to the future king Ancus Marcius.
Other authors gave Numa in addition five sons, Pompo (or Pomponius), Pinus, Calpus, Mamercus and Numa, from whom the noble families (gentes) of the Pomponi, Pinarii, Calpurnii, Aemilii, and Pompilii respectively traced their descent. Other writers believed these were fictional genealogies to enhance the status of these families.
Read more about this topic: Numa Pompilius