Sure!

https://www.sciencehistory.org/stories/magazine/the-age-of-scurvy/

So, 10-30% was my estimation from my time in school of sailor dying before even seeing battle. Governments expected a return of 50% of sailors. A coin flip. I wouldn't want to take those odds.

As for the claim that subsequent births are less risky than the first.

https://pmc.ncbi.nlm.nih.gov/articles/PMC3520435/

n=40'454 You're 18% more likely to die birthing your first, as you are birthing your second, third and forth, respectively. And then it starts to ramp up at 5 again

We found an 18% increase in the total mortality risk for mothers of one child, and 21% and 49% increases in total mortality risk for mothers having 5–9 and ≥ 10 children, respectively, as compared with mothers of 2–4 children.