Sjaak uiga igoa sili: Po nei, Fiafia, Laki, Gauai, Foafoa. Aumai Sjaak uiga o le suafa.
Sjaak amataga o le igoa muamua. Dutch form of Jacques or Isaac. Aumai Sjaak amataga o le igoa muamua.
Sjaak igoa diminutives: Sjakie. Aumai Nicknames mo Sjaak.
E tusitusiga po o le auala e faalauiloa le igoa muamua Sjaak: SHAH:K. E faapefea e faalauiloa Sjaak.
Igoa tutusa mo Sjaak i atunuu ma gagana eseese: Akiba, Akiva, Coby, Giacobbe, Giacomo, Hagop, Hakob, Hemi, Iacobus, Iacomus, Iacopo, Iago, Iakob, Iakobos, Iakopa, Ib, Iikka, Iiro, Iisakki, Ike, Isaac, Isaak, Isak, Issac, Itzhak, Izaak, Izsák, Jákob, Jaagup, Jaak, Jaakko, Jaakob, Jaakoppi, Jacky, Jacob, Jacobo, Jacobus, Jacó, Jacopo, Jacques, Jago, Jaime, Jaka, Jakab, Jake, Jakes, Jakob, Jakov, Jakša, Jakub, Jákup, James, Jamey, Japik, Jaša, Jaska, Jaume, Jaumet, Jay, Jaycob, Jaymes, Jeb, Jem, Jemmy, Jeppe, Jim, Jockel, Jokūbas, Kapel, Kimo, Koba, Koby, Koppel, Kuba, Lapo, Sahak, Séamas, Séamus, Seumas, Shamus, Sheamus, Yaakov, Yago, Yakiv, Yakov, Yakub, Yakup, Yankel, Yaqoob, Yaqub, Yasha, Yitzhak. Aumai Sjaak i isi gagana.
O le tele o igoa tutusa ai ma faaiu Theesfeld: Caitlyn, Lonny, Huey, Sydney, Norbert. Aumai Igoa e aumai faatasi Theesfeld.