useless trivia: What Word Means: Fibrous - Made Of Fibers?

Questions

In 1385 ---------- defeat Castilians at Aljubarrota, retain independence. ?

In 1385 Portuguese defeat ---------- at Aljubarrota, retain independence. ?

In 1385 Portuguese defeat Castilians at---------- , retain independence. ?

In 1457 Oldest exactly dated ---------- (c. 3 years after Gutenberg). ?

In 1777 ---------- Christian Oersted, physicist, chemist born?