Well the comment was about people with the same surname being likely relatives. Knowing how patronymics work you would not assume that two persons that share th

Well the comment was about people with the same surname being likely relatives. Knowing how patronymics work you would not assume that two persons that share the patronymic are related, just that their fathers have the same name. You are right in that they are actually a surname, and that they are also a function of who you were born to, but the propagation rule means that they are a much poorer metric for blood relations.