Ann Rae Rule (nee Stackhouse; October 22, 1931 July 26, 2015) was an American true crime author of "The Stranger Beside Me", about serial killer, and Rule's co-worker, Ted Bundy. Rule was also known for her book "Small Sacrifices", about Oregon child murderer Diane Downs. Many of Rule's books center on murder cases that occurred in the Pacific Northwest and her adopted home state of Washington.
Diane Downs killed 5 children
A: It's impossible to say

Benoit ( or ; ] ) is a Catholic French male given name, or, less frequently, Benoist. The name is the Old French word for "blessed", equivalent to the English name Benedict. The female form of the name is Benoite, or Benedicte as well as family name.
Benoit means "blessed".
A: Yes

Builth Castle (Welsh: "Castell Llanfair-ym-Muallt" ) was a castle built under King Edward I, just outside Builth Wells, Powys, Wales. At one time it was an impressive stone-built castle but all the masonry has been removed over the years and all that remains are the mound on which it stood, the ditches and embankments.
The castle stood on a mound
A:
Yes