What are the four languages that part of Latin language family?

It's not quite accurate to say there are only four languages in the Latin language family. The Latin language family, also known as the Romance languages, is quite extensive.

Here are some of the major branches of the Romance languages, and some of their key members:

* Italic

* Romance

* Western Romance

* Ibero-Romance (Spanish, Portuguese, Catalan, Galician)

* Gallo-Romance (French, Occitan, Romansh)

* Italo-Romance (Italian, Sardinian)

* Rhaeto-Romance (Romansh, Ladin)

* Eastern Romance

* Balkan Romance (Romanian, Aromanian)

* Dalmatian (extinct)

So, while there are only four main branches of the Western Romance languages, there are many more individual languages that fall under that umbrella.