Mrs Coulson, a 28-year-old married classical musician, was born and brought up in Durham and now lives and works in the city.
Her father was Durham University Professor Jonathan Lowe, one of the world’s leading philosophers who died earlier this year aged 63. Her mother, Susan, is a university philosophy lecturer.
Mrs Coulson plans to campaign on local issues, such as planning matters. She said only the Conservatives could offer change in Durham and continued economic solvency across the country.