Their son John assumed by Act of Parliament the surname of Crewe in lieu of his patronymic in 1708.
Lord Crewe died in 1829 and was succeeded by his son, the second Baron.
Their son Robert succeeded to the Crewe estates on the death of his maternal uncle in 1894 and assumed the same year the additional surname of Crewe by Royal licence.
Richard Crewe, brother of the first Baron, was a Major-General in the British Army.
His great-grandson Sir Charles Preston Crewe (1858–1936) was a Brigadier-General in the South African Defence Force and a member of the Legislative Council of the Union of South Africa.