The name Mathoslah is derived from the hebrew patriarch מְתוּשֶׁלַח. After a jaunt through arabic & then transliterated into English by the immigration & naturalization service – it’s become Mathoslah. You can also pronounce it Methuseleh, if you prefer – or even Met-wesh-leh if you’re more comfortable with Semitic languages
It's pronounced Meh-Thoose-El-Ah – Thanks for Asking!