Who is the smallest, perfectly healthy and normally proportioned small person ever?

How small can a normally proportioned, healthy person (male or female) get?

I remember browsing through a book, last year, regarding a guy who lived in the 17th century who was supposedly a foot and a half tall.

Buggered if I can remember what his name was, tho’, so I can’t seem to find any further info at the moment.

I’m sorry. I expect I could have made this answer less helpful if I really REALLY tried…

Ah! Here we go.

Two and a half feet tall. Any advance on two-and-a-half feet?