Misc: ortho- and recto- in latin both mean?

Questions

In 1643---------- , scientist, discovered laws of gravity.?

In 1785 ---------- (in Germany), storyteller?

In 1797 Wilhelm Beer, first to map?

In 1809 Louis Braille, developed ---------- for the blind?

In 1863 Four-wheeled roller skates patented by ---------- of New York.?