Sentence 1: His grandfather , Mihail Tatarchev , was the brother of Hristo Tatarchev , one of the founders of IMRO .
Sentence 2: His grandfather , Mihail Tatarchev , was brother of Hristo Tatarchev , one of the founders of the IMRO .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?