Land measurement: caballería

We have been looking at some land and found one where its size is defined in caballerias. Say what? Well, sizes.com comes to the rescue. And it also explains what a solar is--something I have wondered for ages--and even a peonia which I had never heard of. From that page:

A peonia was the amount of land granted a retiring foot soldier. A caballería was the amount granted to a retiring cavalryman (literally translated, “caballería” means “cavalry”), and was four to five times larger than a peonia. The actual size of a peonia or caballería depended on the productivity of the land and the merit of the recipient.

As you might expect from the last part of the quote, caballería is defined different in different countries. The article goes on to say that in many areas it is 64 manzanas. But, a manzana is 10,000 square varas and varas are different in different places. Read the web page if you are interested. If you just care about land in Nicaragua, the answer seems to be that a caballería is 44.8 hectares.