The 1851 Census recorded:
Tresco, Isles of Scilly, Cornwall:
Jonas Nicholls, head, married, age: 42 years, occupation: boot and shoemaker, born: Tresco
Rebecca Nicholls, wife, married, age: 40 years, born: Tresco
John Nicholls, son, unmarried, age: 16 years, occupation: farm labourer, born: Tresco
Jonas Nicholls, son, aged: 13 years, occupation: scholar, born: Tresco
Rebecca Nicholls, daughter, aged: 5 years, occupation: scholar, born: Tresco
Elizabeth Nicholls, daughter, aged: 1 year, born: Tresco

The 1861 Census recorded:
Northward, Tresco, Isles of Scilly, Cornwall:
Jonas Nicholls, head, married, age: 52 years, occupation: shoemaker, born: Tresco
Rebecca Nicholls, wife, married, age: 49 years, occupation: shoebinder, born: Tresco
Rebecca Nicholls, daughter, aged: 16 years, occupation: domestic servant, born: Tresco
Elizabeth Mary Nicholls, daughter, aged: 11 years, occupation: scholar, born: Tresco
Agnes Mary Craggs, visitor, age: 2 years, born: Exeter, Devon

At the time of their marriage in 1865, Rebecca was noted as a spinster, aged 20 years from Tresco, father, Jonas, a cordwinder and James a bachelor, farmer, aged 30 years from St Martins, father, James a farmer.