Efa uiga igoa sili: Fiafia, Foafoa, Volatile, Agavaa, Agalelei. Aumai Efa uiga o le suafa.
Knopf uiga faaiu sili: Foafoa, Agavaa, Laki, Matuia, Lē ma vāloia. Aumai Knopf uiga o faaiu.
Efa amataga o le igoa muamua. Welsh form of Eva. Aumai Efa amataga o le igoa muamua.
Knopf tupuaga. Means "button" in German, originally belonging to a button maker or button seller. Aumai Knopf tupuaga.
Igoa tutusa mo Efa i atunuu ma gagana eseese: Ava, Chava, Chawwah, Éabha, Éva, Eeva, Ève, Eevi, Eua, Eva, Eve, Eveleen, Evelia, Evie, Évike, Evita, Evvie, Ewa, Hava, Havva, Hawa, Ieva, Yeva. Aumai Efa i isi gagana.
Surnames taatele ma igoa Efa: Mulauzi, Matemezano. Aumai Lisi o surnames ma igoa Efa.
O le tele o igoa tutusa ai ma faaiu Knopf: Malvina, Annetta, Ryszard, Carolin, Theron. Aumai Igoa e aumai faatasi Knopf.
Ogatasi o Efa ma Knopf o 77%. Aumai Ogatasi o Efa ma Knopf.