no.
The authority to notarize is granted by the state. If the documents are signed in West Virginia, the notary can notarize them.
No. A notary shouldn't notarize any instrument they may derive a benefit from. Further, they should not acknowledge their own signature. That document would be extremely vulnerable to challenges.
It is important that the notary is not related in any way to the client.
No, it is a conflict of interest.
No. It is a conflict of interest to notarize for family members or friends.
Most banks offer notary services for their customers. They may charge a small fee for non-customers.
A Commissioner of Deeds is a Notary. So, the answer is Yes.
If the documents are signed in Kentucky. Otherwise you need to find a notary in Ohio.
In most cases notarization must be done by a third party not directly involved in the transaction being notarized. In most jurisdictions a notary can notarize something for a family member as long as they are not the beneficiary of the transaction. This is for the protection of all parties involved and should be common sense in anyone's book.
If that family member in any way would benefit from the POA or have any interest in the appointment of the chosen attorney-in-fact then they should not notarize the POA. In fact, it would be better to have it notarized by a disinterested third party to avoid any future challenges to the actions taken under the powers of the POA by the attorney-in-fact.
A New York notary can notarize anything executed in New York. They cannot do so in another state.
Generally, a notary can only notarize signatures while in a state in which they have a notary commission, for the most part. Notaries can hold commissions from multiple states (in some cases). Some states also provide reciprocity to other states, meaning a notary from one state can legally notarize documents in another (although this is not common). Whether they can notarize wills or not is another question. They almost certainly can, if they can notarize at all. Unfortunately, you will need to check your state laws to be sure.