wˌɛn fˈɜːst dɪvˈɛləpt, ðɪs ɹˌɛzᵻdˈɛnʃəl ˈɛɹiə wʌz nˈoʊn æz "hˈaɪ wˈɛlɪn" bᵻfˌoːɹ lˈeɪɾɚ tˈeɪkɪŋ ɔnðə nˈeɪm ʌvðɪ ˈoʊld pˈæɹɪʃ ɔnðə sˈaʊθ sˈaɪd ʌvðə nˈɪɹbaɪ hˈɜːtfɚd ɹˈoʊd.
When first developed, this residential area was known as "High Welwyn" before later taking on the name of the old parish on the south side of the nearby Hertford Road.