A Kidnapping at the English Saddles Camp

All was going well at the English Saddles summer camp until one Wednesday morning when one of the campers, a twelve-year-old boy named Cyril, was kidnapped from a shady path that wound through the pines.

The Suspects were:

1. the camp counselor
2. the camp owner
3. the horse groomer
4. Cyril’s uncle
5. the cook
6. the farrier (horse shoer)

Clues:

1. At the time of the kidnapping, two of the suspects were watching some of the campers swimming.
2. No one could tell apart two of the suspects who were identical twins.
3. The camp counselor had only step-siblings — two stepsisters who had started law school last year when he was finishing grade 12. The stepsisters were summering in Vermont.
4. The horse groomer asked one of the twins out on a date but she turned him down.
5. There was an equal number of male and female suspects. 
6. The twins, who were not teenagers, had recently had a large birthday celebration when they had turned an age that was a perfect square.
7. Cyril’s uncle was his mother’s older brother. The uncle had been 3 when Cyril’s mum was born. She was 25 when she had Cyril. 
8. The camp owner’s age was a perfect cube greater than 40.
9. The horse groomer was blind owing to a fireworks accident that took place five years ago when he was 39.
10. The youngest and oldest suspects were at a horse auction together when the kidnapping took place.
11. Cyril’s friend Thomas, who was one of the children swimming at the time of the kidnapping, said the two swimming supervisors were the same sex.
12. The oldest suspect was the only one whose age was both a perfect square and a perfect cube.
13. The kidnapper stole the owner’s Rolls Royce and drove away in it with Cyril. 

Who kidnapped Cyril?