El cetro de Ottokar
In his 1941 play "" co-written with Jacques Van Melkebeke, Hergé named them as "Durant and Durand", although he later renamed them as "Dupont and Dupond". When "King Ottokar's Sceptre" was serialised in "Eagle" for British readers in 1951, the characters were referred to as "Thomson and Thompson"; these names were later adopted by translators Leslie Lonsdale-Cooper and Michael Turner in their translation of the series into English for Methuen Publishing.