Complex sentence: After his father's death he sold the family estate on the shores of the River Clyde; he purchased the farm of Dennistoun in Renfrewshire, the centre of the original possessions of his family in that county.
Split into simpler sentences: After his father's death he was obliged to part with the family estate on the shores of the River Clyde. He purchased the farm of Dennistoun in Renfrewshire, the centre of the original possessions of his family in that county.