In recent history, anyway. We cannot know the pro-life positions of 18th and 19th century presidents, or even first half of 20th century. When did abortion become widely available? I will research that and post an answer later.
Looks like the answer to question posed is basically this:
Abortion was practised in 18th and 19th centuries, with fairly wide social tolerance, and scattered opposition. The largest political opposition to it (in USA) was at the state level, around 1900. A wikipedia article on the subject never cites one instance of a federal politician taking any stand on abortion (before surgical procedures, “quickening” of the pregnancy resulting in a stillbirth was the widely used type of abortion; surgical abortions were quite frequently applied by early 20th century. The great debate about abortion began in the 1960s.