A will cannot grant an easement over someone else's property. However it would be evidence that an easement existed. If property is landlocked you can obtain an easement by prescription or by necessity. By prescription you prove that the easement has been in continuous use for a number of years. By necessity means that there is no other way to get to the property. Here you have to trace the title back to determine how the property became landlocked. Either way you will have to go to court if the other property owner will not willingly give you an easement.
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