RSA 547:3 Jurisdiction.

I. The probate court shall have exclusive jurisdiction over the following:
(a) The probate of wills.
(b) The granting of administration and all matters and things of probate jurisdiction relating to the composition, administration, sale, settlement, and final distribution of estates of deceased persons, including the establishment of death of a person presumed dead and assignment of homestead and claims against the executor or administrator for those services related to the prior care and maintenance of the decedent and the administration of insolvent estates and appeals therefrom.
(c) The interpretation and construction of wills and the creation by judgment or decree, interpretation, construction, modification, and termination of those trusts described in RSA 564-