 Alexander Williamson, who purchased Alvie Estate in 1927 and Dalraddy Estate in 1929, was a younger son of the MP.Around the time of his death in 1930 the Estates were put into a limited liability company Alvie Estate Ltd. His nephew Gerald Williamson managed the Estates for his widow until her death in 1956.He organised the replanting of most of the woodland areas felled during the 2 world wars.