The spelling of the word "Brynnan" is influenced by its Welsh origins. The double "n's" indicate the nasal sound /n̥/ which is commonly found in Welsh language. Additionally, the "y" in Brynnan is pronounced as the sound /ɨ/, which is different from the standard English pronunciation of the letter "y". To be precise, the IPA phonetic transcription of "Brynnan" is /brɪnən/, where the first syllable is pronounced with an open-mid front unrounded vowel /ɪ/ and the second syllable ends with the nasal sound /n̥/.