Sheryll was born in the village of Millbrook, South East Cornwall where she went to school before continuing her secondary education at nearby Torpoint Comprehensive School. Sheryll was a member of the Governing Body of the school for 9 years.
Sheryll still lives in the village and before becoming an MP she worked for the NHS at a local surgery. Sheryll was widowed when she lost her fisherman husband Neil to the sea in March 2011.
Sheryll has two grown up children. Her daughter Sally is an officer in HM Forces and her son Andrew works in marine electronics. Sheryll is proud of her South East Cornwall roots which can be traced back across many generations.
Sheryll represented Rame on Cornwall County Council and represented her village on Caradon District Council until it was abolished in April 2009. She was the Leader of the Conservative Group from 2003 to 2007.
Before becoming involved in local Government, Sheryll experienced a taste of National and European Governance when she was a representative of the Fishing Industry.