I found an Alexander Covert in the 1850 Monroe, Clark, Indiana.
age 15
f John 35; m Ann 28, Alexander 15, William 14, Wesley 12, Samuel 10, John 8, and Mary 1/2.
Alexander Covert b 1835 Clark Co., IN
Sp Emily Lux
Mary (1849), Emeranda (1851), Franklin (1853), Edmond (1855), Ellen (1856), Adolphus Frank (1859), Isabella Nora (1861) and Ida (1880)
sp Nancy Johnson
Sarah (1858) and George (1862)
sp Carrie Stinnings