John Hay and John Nicolay, both from Pittsfield became personal secretaries to Lincoln when he became President of the United States. Many Civil War era homes still exist in Pike County. In fact, there are more houses and sites associated with Lincoln in Pittsfield, Illinois than in any other place in the country.
Cottonee does not need to reach any particular level to evolve. You can use a Sun Stone on it and it will evolve into Whimsicott! Happy playing :)
Keep on giving it Haircuts and it'll evolve eventually. Eevee can evolve into an Umbreon at and between the levels 2-99. It needs at least 220 Happiness points but from what you said earlier (trusts you), it means that your very close to reaching that level. Makes sure that you level it up so that it evolves. If you don't level it up, then it won't evolve.