He was elected (Irish Unionist) Member of Parliament for West Down in 1905, resigning in 1907 by becoming Steward of the Manor of Northstead.
Growing up, he served as an apprentice in his father's linen business.
He represented the firm Liddel and Co. in the United States until his father died.
[1] Liddell was elected (Irish Unionist) Member of Parliament for West Down in 1905, defeating Alderman Andrew Beattie.
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