Generally speaking, inheritances, gifts, and property owned by one partner before they lived together remain that person's separate property, as long as they don't become intermingled with joint property.
The court is a court of first instance which also handles probate cases, estate settlements (joint property, bankruptcy, etc.), and notarial transactions.
If you are not married, but in a stable committed relationship, you should include a statutory declaration of common-law union and proof of joint property or bank accounts.
Other types of cases brought before this court include: probate cases, estate settlements (joint property, bankruptcy, etc.), partnership registrations, and notarial transactions.