Bassillon-Vauzé is located some 25 km north-east of Pau and 8 km west of Maubourguet. The eastern border of the commune is also the departmental border with Hautes-Pyrénées. Access to the commune is by the D68 from Vidouze in the east which changes to the D148 at the departmental border and continues through the south of the commune west to join the D943 south-west of the commune. The D205 comes from Corbère-Abères in the north which passes through the commune and continues south to join the D148 in the south of the commune. The commune is mostly farmland with some forest in the west.[4][5]
The Larcis river and the Lac de Bassillon, which is formed by a dam on the Larcis, form the eastern border of the commune. The Ruisseau du Boscq forms the western border of the commune as it flows north into the lake formed by the Retenue de Lembeye-Corbères dam.[4][5]
Michel Grosclaude said that Bassillon comes from the Latin name Bassilius with the suffix -onem, giving "Domain of Bassius". The origin of Vauzé is undetermined.[8]
The following table details the origins of the commune name and other names in the commune.
Name
Spelling
Date
Source
Page
Origin
Description
Bassillon
Basilhoo
1385
Grosclaude
Census
Village
Basilhoo
1402
Raymond
23
Census
Bacilhoo
1540
Raymond
23
Reformation
Baxilho
1542
Raymond
23
Reformation
Basilhon
1546
Raymond
23
Reformation
Bacilhon
1550
Raymond
23
Reformation
Baßillon
1750
Cassini
Bassillon
1790
Cassini1
Vauzé
Bauser
1385
Grosclaude
Census
Village
Bausee
1538
Raymond
173
Reformation
Bauser
1538
Raymond
173
Reformation
Beauzé
1675
Raymond
173
Reformation
Vauzer
1682
Raymond
173
Reformation
Vauzé
1750
Cassini
Vauser
1768
Raymond
173
Denombrement
Vauzé
1790
Cassini1
173
Reformation
Le Castet
Le Castet
1863
Raymond
45
Farm
Le Moutha
Le Moutha
1863
Raymond
120
Place
Moutoné
Mountouné
1774
Raymond
120
Terrier of Bassillon
Place
Sources:
Grosclaude:Toponymic Dictionary of communes, Béarn, 2006 (in French)[8]
Paul Raymond noted on page 23 of his 1863 dictionary that in 1385 Bassillon had 7 fires and depended on the bailiwick of Lembeye. On page 173 he mentioned that Vauzé had a lay abbey, vassal of the Viscount of Vauzé, and that the Barony of Vauzé was created in 1641 under the Viscounts of Béarn which included Peyrelongue-Abos and Vauzé.[6]
The former communes of Bassillon and Vauzé were merged in 1833.