Possible Clues:

• A northern church’s attempt to establish origin
• Subtle ascent by railway line
• 'He who boasts of his ____ is praising the deeds of another' (Seneca)
• Genealogy dot-com
• Man finally delving into poor Tracey’s lineage
• Former family members attempt to support balls after duke’s departed
• Race tyres can burst
• Strange crest dividing a New York family
• In circumstances, trying descent
• Dances trying to hold line