Marya Seaworth is a fictional character name from Game of Thrones, not a common word. As a proper noun with multiple words, it presents a challenging, multi-phoneme pronunciation that should preserve the distinctive name tones: Marya (MAH-ree-ah) and Seaworth (SEE-worth). In practice you’ll say it as two stressed syllables with even pacing, maintaining accuracy for the character’s Slavic-inspired first name and the English surname.
Full pronunciation guide