Who was Calliope the muse of Epic poetry

One of the nine Muses, Calliope was the Muse of epic poetry, and was pictured with a tablet and stylus, or with a scroll. She had many children by different gods: Carybantes by Zeus, Hymen, Ialemus and Linus by Apollo, Rhesus by the river Strymon, the Sirens, Orpheus and Oeagrus. All of these children, except Rhesus, had to do with music or poetry. She was the oldest, the most respected, the most serious, the wisest and the most determined of the Muses.

Although a virgin according to some, Calliope is treated by others as the mother of Ialemos, Apollo, or Orpheus or Linus, Hymenaeus and Comatheon. There were many who also considered Homer as her son.
They painted Calliope young, beautiful, with majesty and imposingness, with flowers on her head or ivy, in her right hand holding laurels and in her left two books, often the Iliad and the Odyssey.

Calliope had a special weakness for Achilles, and taught him how o entertain and enhance the morals of his friends by singing at their feasts.
When Aphrodite and Persephone argued who would get Adonis, Calliope was called in by Zeus as mediator. Her decision was that each goddess would be with him a certain part of the year.