Hey, if you haven't come up with a name for the region yet, here's a few names for you, in a few fakey styles:
1) Region: Ta Zapadön (Tah Zah-PAHD-uhn). Subregions: Ocean: Padais (PAHD-ice), Large lake: Ta Völka (Tah VUHL-kah), Small lake: Ta Malka (Tah MAHL-kah), Main mountain range: U Nebogor (oo NEH-boh-gohr), SW range: U Robön (oo ROB-uhn), NW range: U Ledön (oo LED-uhn), N range: Za Poledön (zah Poh-LED-uhn). The Great Gulf: Tau Medejel (Taw Meh-DEH-jel). The middle kingdoms: U Sredin (oo SREH-deen), the kingdom by the gulf: Spodön op Medejel (SPOH-duhn ohp Meh-DEH-jel), the SE region: Na Iuga (Nah YOU-gah), the NE region: Na Sevru (Nah SEHV-roo). The eastern sea: Ta Dvigais (Tah DVEE-guys).
Alternate:
2) Region: Zhar Belkh. Subregions: Ocean: Krakhotha, Large lake: Golbotha, Small lake: Zalbotha, Main mountain range: Shpirath Thund, SW range: Krotha Thund, NW range: Gawhrim Shol, N range: Besskad Shol. The Great Gulf: Sorokothim. The middle kingdoms: Belkhombor, the kingdom by the gulf: Sornombath, the SE region: Rakhul var Belkh, the NE region: Ashtramor. The eastern sea: Oliyotha.
2) Region: Tayarango. Subregions: Ocean: Sikura Malvento, Large lake: Visto Porando, Small lake: Alasto Korengo, Main mountain range: Onda Rotala, SW range: Perondaka Simera, NW range: Karonda Agula, N range: Karonda Murdala. The Great Gulf: Kalo Fondo. The middle kingdoms: Keteya Belimasa, the kingdom by the gulf: Keteya Kalosula, the SE region: Ulsaranda, the NE region: Vitrusango. The eastern sea: Kura Sensata.
That should keep you in silly names