 The two which the Columbus Zoo kept, Baron Macombo and Millie Christina, became the parents of Colo, the first gorilla born in a zoo, in Columbus on 22 December 1956.She was the first gorilla born in captivity as well as the first gorilla in captivity to be raised by her own mother.Jambo's older sister Goma, born on 23 September 1959 in Basel, was the first gorilla born in Europe and lived in the Zoo Basel until her death in 2018.