Namesakes
Characters in Greek Mythology:
1 character
Hyacinthus (a.k.a. Hyacinth) (m) 
Fictional Characters from Television:
1 character
Hyacinth Bucket 1990; 2016 Keeping Up Appearances; Young Hyacinth
Saints:
5 saints, 1 blessed
Saint Hyacinth of Caesarea 96-120
Saint Hyacinth ?-257
Saint Hyacinth ?-690
Saint Hyacinth of Poland 1187-1257
Blessed Jacinto Orfanel (a.k.a. Hyacinth) ?-1622
Saint Giacinto Castaneda (a.k.a. Hyacinth) ?-1773