0 past simple and past participle of summon
1 to order someone to come to or be present at a particular place, or to officially arrange a meeting of people:
2 to increase your courage or strength, especially with an effort:
Late last night, the French ambassador was summoned to the Foreign Office to discuss the crisis.
After her month's sick leave, she was summoned to see the company's welfare officer.
He summoned his troops.
We were summoned to the headmaster's office.
She summoned us to admire her new greenhouse.
In 1747, the system of land tenure by which a tenant could be summoned for military service, known as hereditary ward-holding, was abolished.
Most of those summoned to appear were businessmen, politicians, church ministers and labour representatives.
This is, of course, what the recipient is being summoned for.