Jan Pienkowski, illustrator.
A Necklace of Raindrops is a collection of children’s stories by Joan Aiken. I can’t recommend them highly enough. Combined with Jan Pienkowski’s beautiful illustrations they are a treasure. These images are not all from A Necklace Of Raindrops - they’re what Google Image Search offered me - but they are illustrative of Pienkowski’s beautiful drawings.
Joan Aiken’s stories in A Necklace of Raindrops are for younger children, but she also wrote brilliant and haunting novels for older children such as Midnight Is A Place and The Wolves of Willoughby Chase.
Jan Pienkowski also illustrated the Meg, Mog and Owl books, which are awesome.