The spelling of the word "Wehrle" may seem confusing to some, but it follows the standard rules of English phonetics. The "W" is pronounced as the voiced labial-velar approximant /w/, followed by the long vowel sound /ɛ/ as in "bare." The "r" in the middle is pronounced as a voiced alveolar trill /r/, and the final syllable is pronounced with the vocalic /l/ sound followed by the unstressed vowel schwa /ə/. So the correct IPA transcription for Wehrle is /ˈwɛrlə/.