There's also a Sarah LAST nee CAPON who married a William LAST in 4Q 0f 1864, who could also match your Sarah. He was living in Bruisyard in 1861.
I have no firm details of her or her family, but William was a GGUncle of mine, a son of George LAST (c.1812-c.1890) and Mahala LAST nee BURGESS (?) (c.1817-c.1892).
All the best in your researches, Peter.