Nominative and Genitive Demonstrative Pronouns

You may have noticed that in the paradigm table for strong masculine nouns that the nouns were preceded by se, þa, þone, þara, þæs and þæm. These are demonstratives and function in the same way as the definite article ‘the’ or the demonstrative pronouns ‘that’ and 'those'.

A noun and all its modifiers, including demonstrative pronouns, always share the same case, gender and number. This is called case harmony and means that demonstratives are a good way of figuring out the case a noun is in.

Old English does not generally have an indefinite article (what would be the modern English ‘a’ or 'an'), though sum — some and an — one, occasionally function in this role.