Jesus does not have a last name. Last names were not common in those times. Christ is not a name, but a title. Christ means “anointed” or “Messiah”, so Jesus became the “Christ” or “Messiah” when he got baptized at the age of 30.
What is God's real name?
Yahweh, name for the God of the Israelites, representing the biblical pronunciation of “YHWH,” the Hebrew name revealed to Moses in the book of Exodus. The name YHWH, consisting of the sequence of consonants Yod, Heh, Waw, and Heh, is known as the tetragrammatontetragrammatonThe Tetragrammaton (/ˌtɛtrəˈɡræmətɒn/) or Tetragram (from Greek τετραγράμματον , meaning "[consisting of] four letters") is the four-letter Hebrew word יהוה (transliterated as YHWH), the name of the national god of Israel. The four letters, read from right to left, are yodh, he, waw, and he.https://en.wikipedia.org › wiki › TetragrammatonTetragrammaton - Wikipedia.