Complex sentence: His daughter was married to the Gohil Rajput king Mokhadaji of Ghogha, whose descendants are the rulers of Bhavnagar, and when he died heirless, Samarsinhji, the son of Mokhadaji succeeded to the throne and changed his name to Arjun Sinhji.
Split into simpler sentences: His daughter was married to the Gohil Rajput king Mokhadaji of Ghogha, whose descendants are the rulers of Bhavnagar. When he died heirless, Samarsinhji, the son of Mokhadaji succeeded to the throne and changed his name to Arjun Sinhji.