Not at all. King Hiryuu did not have any offspring.

[ the story is stupid and i'm in pain reimi why ]

When the humans on Earth turned their back on King Hiryuu, seeking to kill him, the four dragon gods gave their blood to four chosen humans, granting them with great power. The man who received the power of the White Dragon's Claw is the one who went on the start my tribe - he is my ancestor.