Not my family line, just sharing. *NOTE This is a brother yet either the brother or the author chose to spell the name differently, yes the typesetter in Chicago could have made a mistake also.
From the book "HISTORY AND BIOGRAPHY, COUNTIES OF WHITE AND PULASKI INDIANA. Historical and Biographical. Illustrated. Chicago; F. A. Battey & CO., Publishers. 1883." page 274, Prairie Township, White County, Indiana
"W. A. McLEAN was born in the State of Ohio, October 23, 1825, and is a son of ALEXANDER and JANE (STONE) McLEAN. At the age of 10, he was brought to Tippecanoe County, this State, where he learned the tanner's trade, which he followed about five years. In the spring of 1865, he came to his farm on Section 30, this township, and November 9, 1865, at Monticello, married MRS. HELEN M. REED, daughter of JOHN COMPTON and a native of Ohio. This lady died October 18, 1876, leaving two children - ARCHIBALD and MARY B., who are now residing with their father on the homestead, which comprises 200 acres, lacking eight rods, of fine land, improved with substantial farm buildings. For four terms, of three months each, MR. McLEAN taught school, and he is a gentleman well informed on all current topics."