Ferdinand I
1 of 3biographical name (1)
Fer·di·nand I
ˈfər-də-ˌnand 
1016(or 1018)–1065 the Great king of Castile (1035–65); of León (1037–65)
Ferdinand I
2 of 3biographical name (2)
1503–1564 Holy Roman emperor (1558–64)
Ferdinand I
3 of 3biographical name (3)
1861–1948 king of Bulgaria (1908–18)
Cite this Entry
“Ferdinand I.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Ferdinand%20I. Accessed 31 Oct. 2025.
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