[1] Garibay traveled widely throughout the Iberian Peninsula, including places such as Portugal and Andalusia in addition to eminent Spanish cities such as Seville, Toledo, and Madrid.

[1] He involved himself in the political life of these areas and, as a result, was able to write a collective history of Spain itself,[1] which began with Creation and ending with King Pelayo.

[2] In 1594, what is thought to have been apoplexy impaired his mental faculties, although his last historical work entitled Genealogical Illustrations of the Catholic Kings of Spain was ready in time to be published.

[5] Through his political connections, he tried to help the Province of Guipúzcoa recover its former status as a "kingdom",[1] although this attempt failed because he did not have the backing of the General Assemblies.

[1] His 1571 Compendio historia records the name used by his people for their own language as enusquera, which is thought to be related to modern-day euskara.