Claim: The 1263 Varsavia was discovered by Sylvain Arend, in Uccle Obs, the same man who also discovered the periodic comets 49P/Arend-Rigaux and 50P/Arend.
Evidence: It was discovered on 23 March 1933, by Belgian astronomer Sylvain Arend at Uccle Observatory in Belgium. He also discovered, or co-discovered, the periodic comets 49P/Arend-Rigaux and 50P/Arend, Nova Scuti 1952, and a number of asteroids, including notably the Amor asteroid 1916 Boreas and the Trojan asteroid 1583 Antilochus.