He married AMW's half-sister Eliza Isabella McNeill.
He was first listed practising on his own as an attorney at 93 Fishergate, Preston, in 1818. Later he formed the practice of Winstanley and Charnley at 2 Fox Street, Preston, where he still was in the 1855.
P. Mannex, History, and Directory of Mid-Lancashire, Preston, 1855; Robin Spencer, 'Whistler's Early Relations with Britain and the Significance of Industry and Commerce for his Art,' The Burlington Magazine, London, April 1994, CXXXVI, pp. 212-24.