This is Bramley Apple series cache 3 by PuzzleClub, a joint account for Hofficoffi, RichieCactus, ===sgb and TheBignells.
The cache is not at the posted co-ordinates, solve the puzzle below to find it. 
The puzzle uses logic. There are no tricks. Everything you need to solve this puzzle can be found on the cache page.
The Puzzle:
5 boys, ages 6, 7, 8, 9 and 10, are going trick-or-treating in their neighbourhood. Each one is wearing a different costume; each has a different colour bag, and each has a different favourite sweet.
Before leaving, their mothers made them line up left to right for a picture.
The question is.....
What costume is David is wearing?
Here are some clues to help:
Bag: black, blue, green, red, white
Name: Alexander, David, Richard, Stephen, Colin
Costume: cowboy, magician, pirate, vampire, wizard
Sweet: bubble gum, jelly beans, lollipop, Smarties, Freddo
Age: 6, 7, 8, 9 and 10
Mother: Brenda, Eleanor, Katherine, Naomi, Diana
1- The oldest boy is in the third position
2- The vampire is somehow between the boy that has the black bag and the wizard, in that order.
3- Naomi's son is exactly to the right of the 8 year old.
4- The boy who likes jelly beans is in the fifth position
5- The magician is next to the boy who likes lollipops
6- The boy who likes jelly beans has the blue bag.
7- The boy who likes lollipops is in the middle
8- Stephen is somewhere to the right of the boy that has the green bag
9- The boy that likes bubblegum is somewhere between Richard and the vampire, in that order.
10- The nine year old is Naomi's son
11- The pirate is next to the boy who likes jelly beans
12- Alexander is somewhere to the right of the boy who has the white bag
13- Eleanor's son is next to the youngest boy
14- Colin is immediately before the wizard.
15- The boy that has the green bag is somewhere between the 6 year old and the wizard, in that order.
16- Brenda's son is next to Diana's son.
17- The boy that has the green bag is somewhere to the left of Alexander.
18- Alexander is next to the boy who likes Freddo.
19- Diana's son is somewhere to the right of the boy that has the white bag.
The Location:
The Cache is hidden at the following coordinates:
N 51° 10. Smarties, Eleanor, Blue W 000° 31. Diana, Lollipops, Richard
The cache is a camo bison. Hint in geocheck.