豪 (háo, 'grand/heroic') gives the 'Hou-/How-' opener and
乌 (wū, 'crow/black') supplies the rounded '-u/-oo' tail. This is a non-standard pairing — most translators today would render 'Howe' as
豪 (Háo) alone or
豪威 (Háowēi).
豪乌 likely shows up in dub-script SUBTLEX data for one specific character whose name was localized this way.