Though the head of the nation has been usually the person who convokes it, a magnate lower in rank might always, like Achilles in the Iliad, have it summoned when a fitting occasion arose.
"Impressions of South Africa"
James Bryce
Then Charlemagne convokes the bishops and priests of all the province, and placing before them the money which the mouse has fetched, reads them a homely lesson on the foolishness of collecting profitless trifles.
"The Book-Hunter at Home"
P. B. M. Allan
The Emperor convokes the Imperial Diet, opens, closes, prorogues, and dissolves it.
"The Problem of China"
Bertrand Russell