Family Name: The character 于 originally means 'bent' or 'crooked'. The surname Yu has two main origins: one is from the Zhou Dynasty, where King Wu's son was granted the fiefdom of Yu (modern-day Henan), and his descendants took the name Yu. The other origin is from the Xia Dynasty, tracing back to the son of Emperor Shao Kang, whose descendants also adopted the surname Yu.
Given Name: The name signifies being as solid as catalpa wood and as precious as fine jade.