Ratna Singh (born 29 April 1959, New Delhi) is an Indian politician from the Indian National Congress party, and represented the Pratapgarh, Uttar Pradesh constituency in the 15th Lok Sabha. She is often informally referred to as Rajkumari (princess) or Rani (queen), since she belongs to the derecognized Kalakankar branch of the Oudh royal family.She had won from Pratapgarh in 1999, but lost the 2004 elections to Akshay Pratap Singh alias Gopalji, Ratna and Raghuraj are both related to the but hail from different branches. Wikipedia
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