Saint Nicholas of Myra (c. 270-343 CE) was a Greek bishop in modern-day Turkey, famous for secret gift-giving — the legend that grew into
圣诞老人 (Shèngdàn lǎorén, Santa Claus) via Dutch 'Sinterklaas' and English 'Santa Claus'. In Chinese,
圣 (saint/holy) prefixes the transliterated name, just like
圣保罗 (Saint Paul),
圣彼得 (Saint Peter).