Phonetic transliteration:
亨 (hēng) for 'Hen-/Hun-',
特 (tè) for '-ter-',
森 (sēn) for '-son'. The pattern X
特森 is the standard Chinese suffix for English '-terson/-derson' surnames;
亨德森 (Hēngdésēn) 'Henderson' uses the same rhythm with one substitution.