Ustaritz is a town in the traditional Basque province of Labourd, now a commune in the Pyrénées-Atlantiques department, southwestern France. It is located on the river Nive some 13 kilometres inland from Bayonne.
Ustaritz was the location of the assembly of local Basque leaders before the French Revolution. The 19th-century French playwright and historian Jean-Joseph Ader was born in Ustaritz.
Wikipedia https://en.wikipedia.org/wiki/Ustaritz
Coordinates 43°23'55.536" N -1°27'22.395" E
