sentence1: He was also a nephew of Elise Hambro , a brother of Cato , Carl Joachim and Johan Hambro , and from 1946 a stepson of Gyda Christensen .
sentence2: He was also a nephew of Elise Hambro , a brother of Cato , Carl Joachim and Johan Hambro , and since 1946 a step-son of Gyda Christensen .