[Kevmo]

Yes it is true.

https://www.google.com/search?q=age+of+%22viability%22+medieval+england+infanticide&hl=en&biw=1396&bih=634&sxsrf=APq-WBvYvqQBoYXZrkf_9b0xq3ZIIsEHKg%3A1648662910839&ei=fplEYo7nMoKawbkP4OOl-AQ&ved=0ahUKEwiOnp75s-72AhUCTTABHeBxCU8Q4dUDCA4&uact=5&oq=age+of+%22viability%22+medieval+england+infanticide&gs_lcp=Cgdnd3Mtd2l6EAMyBQghEKABOgcIIxCwAxAnOgcIABBHELADOggIIRAWEB0QHjoFCCEQqwJKBAhBGABKBAhGGABQwwlY4yVgrCdoAXABeACAAeABiAGOD5IBBjAuMTEuMZgBAKABAcgBCcABAQ&sclient=gws-wiz

https://www.researchgate.net/publication/284185146_From_Sin_to_Crime_Laws_on_Infanticide_in_the_Middle_Ages

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1082157/pdf/medhist00104-0005.pdf

https://www.karger.com/Article/Abstract/441275

https://press.uchicago.edu/books/TheChild/Child_pages_1-10.pdf

[Chickensoup]

worth of an infant is not an acceptance of infanticide.

Today in most cases infanticide is treated more leniently than death of an adult. not very different from then.

Of course the worth of human life was elevated in late Roman times on in western civ through the spread of Christianity.