All events in January :  

Births:

1 . Zwentibold, Frankish son of Arnulf of Carinthia was born 1. January 871. (died 900)

2 . Pope Alexander VI , was born 1. January 1431. (died 1503)

3 . Lorenzo de` Medici, Italian politician was born 1. January 1449. (died 1492)

4 . Sigismund I the Old, Polish king was born 1. January 1467. (died 1548)

Deaths:

1 . Basil of Caesarea, Greek bishop died 1. January 379. (born 329)

2 . Eugendus, French abbot died 1. January 510. (born 449)

3 . Javanshir, king of Caucasian Albania died 1. January 680. (born 616)

4 . Odo of France , died 1. January 898. (born 860)

Events:

1 . Roman consuls begin their year in office. (1. January, 153)

2 . The Julian calendar takes effect for the first time. (1. January, 45)

3 . The Roman Senate posthumously deifies Julius Caesar (1. January, 42)

4 . The Roman legions in Germania Superior refuse to swear loyalty to Galba. They rebel and proclaim Vitellius as emperor. (1. January, 69)