Ibarra was appointed governor of the newly formed province of Nueva Vizcaya (New Biscay) in 1562, and the following year he founded the city of Durango to be its capital.
Ibarra je imenovan godine 1562. guvernerom novoformirane pokrajine Nueva Vizcaya (Nova Biskaja) , a sljedeće godine je osnovao je grad Durango kao njezin glavni grad.