Niobe in Wikipedia
Niobe (Νιόβη) was a daughter of Tantalus and the sister of
Pelops, all of whom figure in Greek mythology.
Her father was the ruler of a city called either under his
name, as "Tantalis"  or "the city of Tantalus", or as
"Sipylus", in reference to Mount Sipylus at the foot of which
his city was located and whose ruins were reported to be still
visible in the beginning of the 1st century AD, although
few traces remain today. Her father is referred to as
"Phrygian" and sometimes even as "King of Phrygia" ,
although his city was located in the western extremity of
Anatolia where Lydia was to emerge as a state before the
beginning of the first millennium BC, and not in the
traditional heartland of Phrygia, situated more inland.
References to his son and Niobe's brother as "Pelops the
Lydian" led some scholars to the conclusion that there would
be good grounds for believing that she belonged to a
primordial house of Lydia...