Talmud Bavli (Sotah 12a):
ותרא אותו כי טוב הוא תניא ר"מ אומר טוב שמו ר' יהודה אומר טוביה שמו רבי נחמיה אומר הגון לנביאות אחרים אומרים נולד כשהוא מהול וחכמים אומרים בשעה שנולד משה נתמלא הבית כולו אור
"And she saw that he was good" (Shemos 2:2): R' Meir says his [Moshe's] name was Tov. R' Yehuda says his name was Tuvia. R' Nechemia says that he was to become a prophet. Others say that he was born circumcised. The Sages say that when he was born, the whole house filled with light.
These are five opinions of what Yocheved saw in her son Moshe that the Torah describes as "good". But according to R' Meir and R' Yehudah, it seems that she named Moshe at birth either Tov or Tuvia.
