Claim: 1293 Sonja was discovered by Eugène Joseph Delporte, a Belgian astronomer born in Genappe, at Uccle Observatory, in 1933.
Evidence: It was discovered on 26 September 1933, by Belgian astronomer Eugène Delporte at Uccle Observatory in Belgium. Eugène Joseph Delporte (10 January 1882 – 19 October 1955) was a Belgian astronomer born in Genappe. 
Eugène Joseph Delporte (10 January 1882 – 19 October 1955) was a Belgian astronomer born in Genappe. E. Delporte Uccle Obs. 26 September 1933