Find out whether there is any grammatical error in below sentence. He loved / none but / his neighbour’s daughter.

The sentence “He loved none but his neighbour’s daughter” is grammatically correct. The word “none” is a negative pronoun, and the word “but” is a conjunction that introduces a negative

clause. The sentence means that he loved no one but his neighbor’s daughter.

The sentence could be rewritten as “He loved only his neighbor’s daughter.”