Type Word Usage Old Irish Meaning & History Old Irish word meaning "old". Related ItemsFamily Tree·Details Given Name DescendantsShana, Shanna, Shannen, Shannon, Shanon, Shannah(English) Fintan, Fionntan(Irish) Fintan, Sinann, Sionann(Irish Mythology) Fintan(Old Irish) Place Name DescendantsShannon, Sionainn(Irish) Sinainn(Old Irish) Same Spellingşen, sēn, sen 2 Entry updated January 21, 2022