john i

noun

1. Saint,died a.d. 526, Italian ecclesiastic: pope 523–526.
2. the Great, 1357–1433, king of Portugal 1385–1433.

noun

1. surnamed Tzimisces . 925–976 ad, Byzantine emperor (969–976): extended Byzantine power into Bulgaria and Syria
2. called the Great. 1357–1433, king of Portugal (1385–1433). He secured independence for Portugal by his victory over Castile (1385) and initiated Portuguese overseas expansion