I have solved the sampler mystery.
Susannah Spain was born in Lyminge in late 1840 and, in 1859, married George Finn.
Her parents were Thomas Spain and Charlotte Philpott.
George Finn was the son of George Finn and Maria Fordred - his half sister, Harriet Hills (by Maria's second marriage) was my gggrandma.
Susannah died in 1867.