The Personal Pronouns, I, thou, she, and it, are declined as

The Relative Pronouns, who, which, and that, are declined

There are also Demonstrative, or pointing out Pronouns. These are

this, demonstrating a near object;

that, demonstrating one farther off.

These two words show Number by form, but have no change for Case.

Thus

The words such and same may also be considered Demonstrative Pronouns in many instances.

The words ours, yours, mine, thine, &c., it is best to consider as Possessive Cases of the Personal Pronouns, 'I,' 'thou,' &c., and not as Adjectives. They are not, however, joined with their nouns in modern English, but stand separate from them; as, 'The coat is yours.' All the Possessive Cases of the Personal Pronouns are by some considered Adjectives.

The forms 'willest' and 'willeth,' and the Verbal Substantive or Infinitive Mood, are never auxiliary.