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of York Street, Leeds
1817 Directory: Iron and brass founder 
1826 'The largest iron casting ever made in Leeds, was last week completed at the foundry of Mr. Zebulon Stirk, York-street; the ponderous mass weighs near nine tons, and is to be used in the iron works of Messrs. T. Brown and Co. now erecting near the Nether Mills.'
1834 Listed as iron and brass founder, steam engine manufacturer, machine maker and flax spinner. Of York Street Iron Works, His house at 8 St Peter's square. 
1838 Advertisement: York Street Iron Works, Leeds to be sold by the order of the trustees of Mr Zebulun Stirk. Machinery to be sold included a 26 ft bed planing machine; a 'Machine for cutting wheels and pinions, on Ramsden’s plan'; new textile machinery and steam engines of 12 - 30 HP 
1841 Living at Leeds: Zebr Stick (age c55), Machine maker. Also James Stick (age c15); Jno Wade Thornton (age c25);, Book-Keeper; Sarah Stick (age c55); Harriet Atkinson (age c15); and Sarah Ann Thornton (age c7).
1851 Living at 17 Bishopgate Street, Leeds: Zebulun Stirk (age 69 born Otley), Machine Maker master employing 6 men. With his wife Sarah Stirk (age 66 born leeds). Also their grand-daughter Sarah A. Thornton (age 16 born Leeds).