Wrong, this is refuted at length in the Dobbs ruling.

>That the common law did not condone even pre-quickening abortions is confirmed by what one might call a proto-felony-murder rule. Hale and Blackstone explained a way in which a pre-quickening abortion could rise to the level of a homicide. Hale wrote that if a physician gave a woman “with child” a “potion” to cause an abortion, and the woman died, it was “murder” because the potion was given
“unlawfully to destroy her child within her.” 1 Hale 429–430 (emphasis added). As Blackstone explained, to be “murder” a killing had to be done with “malice aforethought, . . . either express or implied.” 4 Blackstone 198 (emphasis deleted). In the case of an abortionist, Blackstone wrote, “the law will imply [malice]” for the same reason that it would imply malice if a person who intended to kill one person accidentally killed a different person:

>“[I]f one shoots at A and misses him, but kills B, this is murder; because of the previous felonious intent, which the law transfers from one to the other. The same is the case, where one lays poison for A; and B, against whom the prisoner had no malicious intent, takes it, and it kills him; this is likewise murder. So also, if one gives a woman with child a medicine to procure abortion, and it operates so violently as to kill the woman, this is murder in the person who gave it.” Id., at 200–201 (emphasis added; footnote omitted).29

>Notably, Blackstone, like Hale, did not state that this proto-felony-murder rule required that the woman be “with quick child”—only that she be “with child.” Id., at 201. And it is revealing that Hale and Blackstone treated abortionists differently from other physicians or surgeons who caused the death of a patient “without any intent of doing [the patient] any bodily hurt.” Hale 429; see 4 Blackstone 197. These other physicians—even if “unlicensed”—would not be “guilty of murder or manslaughter.” Hale 429. But a physician performing an abortion would, precisely because his aim was an “unlawful” one.

>In sum, although common-law authorities differed on the severity of punishment for abortions committed at different points in pregnancy, none endorsed the practice. Moreover, we are aware of no common-law case or authority, and the parties have not pointed to any, that remotely suggests a positive right to procure an abortion at any stage of pregnancy.

>In this country, the historical record is similar. The “most important early American edition of Blackstone’s Commentaries,” District of Columbia v. Heller, 554 U. S. 570, 594 (2008), reported Blackstone’s statement that abortion of a quick child was at least “a heinous misdemeanor,” 2 St. George Tucker, Blackstone’s Commentaries 129–130 (1803), and that edition also included Blackstone’s discussion of the proto-felony-murder rule, 5 id., at 200–201. Manuals for justices of the peace printed in the Colonies in the 18th century typically restated the common-law rule on abortion, and some manuals repeated Hale’s and Blackstone’s statements that anyone who prescribed medication “unlawfully to destroy the child” would be guilty of murder if the woman died. See, e.g., J. Parker, Conductor Generalis 220 (1788); 2 R. Burn, Justice of the Peace, and Parish Officer 221–222 (7th ed. 1762) (English manual stating the same).30

>The few cases available from the early colonial period corroborate that abortion was a crime. See generally Dellapenna 215–228 (collecting cases). In Maryland in 1652, for example, an indictment charged that a man “Murtherously endeavoured to destroy or Murther the Child by him begotten in the Womb.” Proprietary v. Mitchell, 10 Md. Archives 80, 183 (1652) (W. Browne ed. 1891). And by the
19th century, courts frequently explained that the common law made abortion of a quick child a crime. See, e.g., Smith v. Gaffard, 31 Ala. 45, 51 (1857); Smith v. State, 33 Me. 48, 55 (1851); State v. Cooper, 22 N. J. L. 52, 52–55 (1849); Commonwealth v. Parker, 50 Mass. 263, 264–268 (1845).

Ben Franklin could publish what he liked; that didn't make it legal, or a right.