Shiva Purana
एषां पुत्राश्च पौत्राश्च दनुवंशविवर्द्धनाः ॥ बहवश्च समुद्भूता विस्तरत्वान्न वर्णिताः ॥ ३७॥
Many sons and grandsons were born of them increasing the race of Danu. Being innumerable they are not mentioned in detail.
english translation
eSAM putrAzca pautrAzca danuvaMzavivarddhanAH ॥ bahavazca samudbhUtA vistaratvAnna varNitAH ॥ 37॥
hk transliteration by Sanscript