Richard P Morrow

My 2x paternal grandparents were Richard P Morrow and Rebecca Rose O'Donnell (1812 - 1886 and 1819- 1859). They lived in Pittsburgh and had the following children: Henrietta Virginia married Jacob Jay Vandergrift;Samuel Henry married Agnes Jane Blakeley; Lewis; Rosannah married William James Young; Anthony Simpson married Lyde ?;  and Charles married Anna Julian, and two Richard juniors who both died as children.  Can anyone verify that Richard's faather was Daniel b 1781 of Alexander Morrow and Margaret Adams, and his mother was Marie Mechling born 1793/4 of Michael Mechling and Anna Marie Altman?