Dalang, also known as Kuyalayan Chuga Shanlang, is originally from Lardat Ku and originally from Kuyala, a jurchen in the East China Sea, so it is also called Donghai Lang.
Erlang is also called Ye Chunga Shan Lang, and its ancestor is called Jia Hachan.
Xiao Lang, also known as Taiyin Sahaga Shan Lang, is related to Taichula, so it is also known as Taro.