§ 111. Two declensions of adjectives are found in O.E., the strong, corresponding to the vocalic, and the weak, corresponding to the n- declension of nouns. The weak declension is used:—
After the definite article sē, sēo, þaet, etc., and the demonstrative pronoun þēs, þēos, þis, etc.
Frequently after the possessive adjectives, mīn, his, etc.
Usually in address.
Sometimes in poetry without any of the preceding conditions, especially when the quality indicated is of the nature of the epic attribute.