Alexander Muir Mackenzie
Family
Family
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In 1787 he married Jane Murray, daughter of Sir Robert Murray, 6th baronet of Dunerne.

His only son, and successor was Sir John William Pitt Muir\-MacKenzie (1806–1855\), named in deference to [William Pitt the Younger](/wiki/William_Pitt_the_Younger "William Pitt the Younger"), the then prime minister. He also had eight daughters.


What was the name of his son and successor?