Лаврентий was born on August 10th, 1751 in Тугулымия.1 Лаврентий's father is Степан Иванович Серков and his mother is <Unknown>. His paternal grandparents are Иван Серков and <Unknown>. He had two brothers and a sister, named Иван, Илья and Евдокея. He is the youngest of the four children.