le

• Article

  1. the (definite article)
  2. Used before abstract nouns; not translated in English.
  3. Used before the names of most countries, many subnational regions, and other geographical names including names of lakes and streets; not translated into English in most cases.
  4. the; my, your, etc.
  5. a, an, per
  6. on

• Pron

château

castle (fortified building or similar structure; winegrower's estate)

appartient

third-person singular present indicative of appartenir

au

Contraction of à le (“to the, for the, at the”).

duc

duke (nobleman)

de

• Prep

  1. of (expresses belonging)
  2. of (used to express property or association)
  3. from (used to indicate origin)
  4. of (indicates an amount)
  5. used attributively, often translated into English as a compound word
  6. from (used to indicate the start of a time or range)
  7. used after certain verbs before an infinitive, often translated into English as a gerund or an infinitive
  8. by (indicates the amount of change)

• Article
• Noun

baron

baron, lord, noble landowner

de la

1. of the
2. some; the feminine partitive article