David Yoolow Stewart
David Yoolow Stewart (1813-1882) of D. Y. Stewart and Co, and Henry Rossell and Co
1813 Born in Dundee
Inventor of method of casting iron pipes vertically
1847 Formation of partnership with Howard Bowser, presumably became D. Y. Stewart and Co
ca.1851 Birth of son William Black Stewart
1857 Patented improvements in moulding or manufacturing cast iron pipes[1]
1860 Left Henry Rossell and Co
1861 Iron Founder employing 123 Men & 14 Boys, living in Glasgow with Susan Stewart 47, Isabella 19, Agnes 17, Georgena 11, Florence 7, Henry 5, Mary Jane 3[2]
1882 Died