Queen Isabelle de VaIois, household accounts.

In the in the accounts of Queen Isabelle de Valois for July and October 1561, seven vihuela-players (musicos de vihuela) are mentioned (Luis Masolar, Esteban Dico, Nicolas Bianton, Antonio Dico, Bautista Topiar, Clemente de Crema and Francisco Bailo)

Músicos de vihuela
El dicho dia. A los siete músicos de vihuela a cada uno de ellos dos cientos y veinte y cinco reales a quenta de sus gajes

Original text: given in corona1999, document reproductions fig1 and fig. 2, pp. 310-311. The payments are to musicians Isabel had brought to Spain from France: Luis Mazollaro, Esteban Dico, Nicolas Branton, Antonio Dico, Bautista Topiars, Clemente da Crema and a musette player, Francisco Baillo, and who figure in her accounts from 1560-1569.

corona1999, p. 29: “The 1561 accounts provide the only case where a bowed instrument is called "vihuela" without any further clarification, whether by means of a qualifying phrase or from the context, and it confirms that the terminology was flexible enough to be stretched so as to include both the bowed and the plucked instrument.”