Ἰωάνου (Ioanou)
Ἰωάνου is an Ancient Greek form of Ἰωάννης, meaning “Ioannes — John (the Baptist; the apostle; the evangelist)”.
It can also be a form of Ἰωάνης, “Ioanes — John (esp. John the Baptist; John the apostle)”. It is the genitive singular masculine noun or adjective.
Found 40 times in the Ancient Greek texts on Socratos.
Where it is used
New Testament, Matthew 9.14: Τότε προσέρχονται αὐτῷ οἱ μαθηταὶ Ἰωάνου λέγοντες Διὰ τί ἡμεῖς καὶ οἱ Φαρισαῖοι νηστεύομεν, οἱ δὲ μαθηταὶ σοῦ οὐ νηστεύουσιν;
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Liddell-Scott-Jones, A Greek-English Lexicon (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.