Literary poet showing lots of ostentation (4)

I haven't cracked this one yet — but the brilliant team at Times for the Times have:

SWAN{k} (ostentation) [lots of]. My AI assistant advises:  The nickname “The Swan of Avon” for William Shakespeare originated with Ben Jonson, a contemporary playwright. It appeared in a poem Jonson wrote as a tribute to Shakespeare, which was published in the First Folio collection of Shakespeare’s plays in 1623, seven years after Shakespeare’s death.