I am searching for Information on the parents of these individuals from county Tyrone Ireland.
Patrick Alexander b. (approx)1800 d. 1891 was married to Mary Gillis and had seven children. (Margaret Alexander, William Alexander,Mary Ann Alexander, Jane Alexander,James Alexander,David Alexander and Susan Alexander)
David Alexander b.1786 d.1849 married to Sara Caldwell and had four children: William David Alexander, Robert Alexander, John Alexander and Jane Alexander.
William Alexander b.1802 d.1888 married to Elizabeth Davis and had five children: John Alexander,William Alexander, Elizabeth Alexander, Arthur Alexander and James Alexander
James Alexander b. 1803 married to Jane Caldwell and had five children: Margaret Alexander, William Alexander, John Alexander, Sara Alexander and Robert Alexander
Patrick, David, William and James are brothers and my dead in this family tree is the fact that I don't know who their parents were.Any help on info about them would be appreciated.