Possible Clues:

• What a nepotist might do for poet
• Promote final part of work by popular writer
• Poet, being endlessly sick, keeping quiet
• Author of the historical novel 'The Captain's Daughter'
• Alexander __, Russian poet (1799-1837)
• Russian writer — sort mostly supporting press
• Russian poet to practise nepotism?
• Alexander --, author of 'Eugene Onegin', a novel in verse
• Russian poet offensive over family
• The poet who, by the sound of it, was always rushin' to be impulsive over his relations