He doesnt have one
A native of Jiangsu (a province of the peoples Republic of China), he was a Catholic Father, and painter. He was very good in water painting. His pen name was 'Ink-Well'. Becoming a Catholic in 1675, Wu assumed the Christian name Simon. In 1681, Wu joined a Christian Missionary and preached in Macao. Wu studied the Latin language, philosophy and theology. In 1688, Wu was consecrated byLuo Wenzao and became one of the three earliest Chinese Fathers in China. Later, Wu preached in Shanghai, and Jiading. He died in Shanghai in 1718. Wu was the author of, 'Ink-Well's Paintings', and 'Ink-Well's Poems', etc.---http://www.yutopian.com/religion/christian/Wu1.html
Jacky Wu's birth name is Wu Jing.
Lala Wu's birth name is Gang Wu.
Vivian Wu's birth name is Junmei Wu.
Myolie Wu's birth name is Wu Hang Yee.
Vanness Wu's birth name is Vanness S. Wu.
Wu Bai's birth name is Jun-Lin Wu.
Johnny Wu's birth name is Johnny Kai-Tsen Wu.
The plural of Wu is Wus.
The plural form of the name "Wu" is spelled as "Wus."
If you are talking about the Empress Wu of Tang Dyasty, Empress Wu's birth name is Wu Mei Niang( 武媚娘)。She is also known as Wu ZeTian.
Butterfly Wu's birth name is Ruihua Hu.