Catherine is often credited with “several” pregnancies but it is difficult to put an exact figure. It’s important to look at the reports, where there is usually between seven and nine credited to her. J. J. Scarisbrick states that there were nine: Three (two males) were stillborn/died quickly after birth, Two (one male) died as an infant, one daughter who survived and then the rest were miscarriages. Doing the math, that would mean in the space of the nine years, Catherine was pretty much never not pregnant! If that number is true, I'm glad it wasn't me. I couldn't imagine having a second straight after a first, let alone going through multiples.
A. F. Pollard goes to say that there were as many as 10 pregnancies. 10 in the space of nine years—I really feel for Catherine if that was the case.
Six is the most common accepted number of pregnancies and that would be the number that is recorded of births that she had. There were births in 1510, 1511, 1513, 1514, 1516 and 1518. The one in 1511 was the birth of Prince Henry, who lived for just seven weeks. The birth in 1516 was Princess Mary, who went on to become Mary I of England. By the way, the figure above of the ones that were stillborn and the ones that died as an infant don't add up when looking through the list of those recorded. It would mean four (two males) were stillborn/died shortly after birth and only one lived for a few weeks.