Meaning of the Sanskrit Word: uttanapadasya

  uttanapadasya—of Uttanapada, the father of Dhruva Maharaja    SB 4.21.28, SB 4.21.29, SB 4.21.28-29
  uttanapadasya—of King Uttanapada    SB 4.8.8

Can't find any compound Sanskrit words containing uttanapadasya.