Still backing up, but only 16th century. Yet another* variation on the “griot.”

Os Lusíadas (1572)
1880 English translation by Richard Francis Burton (1821-1890)

As ancoras tenaces väo levando,
Com a nautica grita coftumada,
Da proa as vellas fos ao vento dando,
Inclinian per a barra abalifada: [II-18]

“Weighed are the biting anchors, rising slow,
while 'customed capstan-songs and shouts resound;
only the foresails to the gale they throw
as for the buoyed bar the Ships are bound:”


Alevantafe nifto o movimento
Dos marinheiros, de hua & de outra banda
Levam gritando as ancoras acima
Mostrando a ruda força que fe eftima. [II-65]

“Meanwhile the sailors to set sail prepare;
all work and either watch its anchor tends;
the weighty irons with willing shouts are weighed,
and sin'ewy strength, the seaman's pride, displayed.”

*As mentioned elsewhere, the word covers a lot of musical ground. The Grito de Dolores is just one of several Grito Mexicano in Mariachi, Norteño, Banda &c.

And, of course, a West Indian plantation griot (gritador) was a kind of 'proto' calypsonian according to some authors.