I think the questions is a bit short. But I think I understand the question.
You Private User want to know if Meginhard van Hamaland and Meginhard, Duke of Frisia, Graaf van Hamaland are the same person.
It is simple question, but the answer is more complex. They are both before 1700 so a Curator will not simply merge them as it is a lot of work of merge them. But in share world tree there can only be one profile for each pre-1700 person.