He is married to Louisa Kerr.
They got married June 1793, he was 21 years old.
Child(ren):
http://landedfamilies.blogspot.nl/2016/08/226-atherley-of-landguard-manor-and.html
Atherley, Arthur (1772-1844). Son of Arthur Atherley (d. 1820), banker, of Southampton and his wife, Susanna, daughter of John Carter of Portsmouth (Hants), born 1772. Educated at Eton (Capt. of Ad Montem Club), Trinity College, Cambridge (admitted 1790) and Lincolns Inn (admitted 1791). An officer in the Winchester Suburbs Volunteers (Lt., 1803; Capt., 1804; Maj. commanding, 1807). Whig MP for Southampton, 1806-07, 1812-18, 1831-34, and stood unsuccessfully for Arundel in 1819 and 1820; in politics he was a friend and supporter of Charles James Fox who described himself as 'an uncompromising friend of Reform'. JP for Hampshire, Sussex and Southampton. He married, 2/16 June 1793, Lady Louisa (1768-1819), daughter of William John Kerr, 5th Marquess of Lothian, and had issue:
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