P.R. Laws tit. 31, § 2146
The following cannot be witnesses to wills:
(1) Persons under age.
(2) Persons who are not residents or domiciled in the place of the execution, with the exception of the cases excepted by law.
(3) Blind persons and those totally deaf and dumb.
(4) Persons who do not understand the language of the testator.
(5) Persons of unsound mind.
(6) Those who have been convicted for the crime of forgery of public or private documents, or for misrepresentation.
(7) The clerks, amanuenses, servants or any other person working in the same office, or who is a partner, or relatives within the fourth degree of consanguinity or second of affinity of the notary who authenticates the will.
History —Civil Code, 1930, § 630; Apr. 30, 1952, No. 144, p. 304; Jan. 10, 1998, No. 17, § 9.