I love Alexander because itās so bold and lionhearted, meaning I could picture it belonging to a revered chariot racer in a hippodrome while overhead a heraldās booming voice announces him before a giant, leering crowd, Ć la Ben-Hur (1959). Or it would fit the noble Peter in the Narnia books. However, I canāt use Peter because my sisterās already called dibs.
Do you have suggestions for similarly lionhearted names? 
I love this description! These names have that vibe for meā¦
[name_u]Leander[/name_u]
[name_m]Maximilian[/name_m]
[name_m]Nikolai[/name_m]
[name_m]Rainier[/name_m]
[name_m]Leopold[/name_m]
[name_m]Hector[/name_m]
[name_m]Alaric[/name_m]
[name_m]Sebastian[/name_m]
[name_m]Dominic[/name_m]
[name_u]Valentine[/name_u]
[name_m]Alistair[/name_m]
[name_m]Lysander[/name_m]
[name_m]Raphael[/name_m]
[name_m]Frederick[/name_m]
[name_u]Constantine[/name_u]
[name_m]Leonidas[/name_m]
[name_m]Olivier[/name_m]
I love your suggestions! Especially [name_u]Valentine[/name_u], [name_m]Sebastian[/name_m], [name_m]Leopold[/name_m], [name_m]Raphael[/name_m], [name_m]Nikolai[/name_m], and [name_m]Leonidas[/name_m] 
Theyāve definitely got that dramatic, ancient vibe Iām going for!
[name_m]Christopher[/name_m]
[name_m]Hector[/name_m]
[name_u]Valentine[/name_u]
[name_m]Frederick[/name_m]
[name_u]Tristan[/name_u]
[name_m]Conrad[/name_m]
[name_m]Leopold[/name_m]
[name_m]Benedict[/name_m]
[name_m]Tobias[/name_m]
[name_m]Lazarus[/name_m]
[name_u]Thaddeus[/name_u]
Sorry if these donāt quite fit the vibes
Itās really pleasant to hear so much love for [name_m]Alexander[/name_m].
Names which equally give me this vibe.
Zachary/Zacharias ( my other sons name)
[name_u]Elias[/name_u] (adore this) potential name for a third for us too!
[name_u]Gabriel[/name_u]
[name_m]Gideon[/name_m]
[name_m]Cedric[/name_m], love this!
[name_m]Alaric[/name_m]
[name_m]Dominic[/name_m]
[name_m]Benedict[/name_m]
[name_m]Barnabas[/name_m]
[name_m]Nicholas[/name_m]
[name_u]Thaddeus[/name_u]
[name_m]Castiel[/name_m]
[name_m]Cassian[/name_m]
[name_m]Cassander[/name_m]
[name_m]Evander[/name_m]
Olivander
[name_m]Nathaniel[/name_m]
[name_m]Benvolio[/name_m]
[name_u]Constantine[/name_u]
[name_u]Valentine[/name_u], [name_m]Leopold[/name_m], and [name_m]Christopher[/name_m] are so lovely 
Ooh, Zachary/Zacharias, Elias, Gabriel, Cedric, and Cassian are utterly gorgeous! Thaddeus does match my description perfectly too! 
Aww, I think of Ol!iver since itās my nephewās name and one of my nns for him is Lionheart. I think [name_m]Alexander[/name_m] and [name_m]Peter[/name_m] are greatā¦ [name_u]Leo[/name_u] and other leonine names (Leander, [name_m]Leopold[/name_m], [name_m]Leonardo[/name_m], Leonidas) feel very lionhearted to me, too. Maybe [name_m]Edmund[/name_m], [name_m]Caspian[/name_m], [name_f]Rilian[/name_f], etc.āother Narnian names? [name_u]Love[/name_u] @katinkaās idea of [name_m]Maximilian[/name_m], too! [name_m]Nathaniel[/name_m] a la The Last of the Mohicans also feels very lionhearted to me.
[name_m]Baudoin[/name_m]
[name_u]Leander[/name_u]
[name_m]Leonidas[/name_m]
[name_m]Baltasar[/name_m]
[name_m]Everard[/name_m]
[name_m]Harald[/name_m]
[name_u]Constantine[/name_u]
[name_m]Julius[/name_m]
[name_m]Justinian[/name_m]
[name_m]Leopold[/name_m]
[name_m]Augustus[/name_m]
[name_m]Tobias[/name_m]
[name_m]Hector[/name_m]
[name_m]Ragnar[/name_m]
[name_m]Odin[/name_m]
[name_u]Oliver[/name_u] / olivier
[name_m]Tobias[/name_m]
[name_m]Zachariah[/name_m]
[name_m]Atticus[/name_m]
[name_m]Caius[/name_m]
[name_u]George[/name_u]
[name_u]Gabriel[/name_u]
Maxamillian / maximus
All give me chariot, fiery, strong, amphitheatre, warrior vibes 
all the leo- names ofc! like leonidas, leonardo, leopold, etc
some others:
lysander
lisandro
evander
leandro
leander
alistair
aragorn
algernon
atticus
aurelian
aurelius
felician
valerian
beowulf
calixto
casimir / kasimir
carlisle
clement / clemente
christopher
cristobal
crispin
florent
florestan
florizel
frederick
isidore
nikolai
percival
ulysses
Ooh! [name_m]Leonidas[/name_m] is gorgeous! I also really like Edmund!!
@Reynardine First, I love your pro pic! [name_m]Leonidas[/name_m], [name_m]Leopold[/name_m], [name_m]Augustus[/name_m], and [name_m]Julius[/name_m] are perfect, thank you 
@Roseturntupnose [name_u]Gabriel[/name_u], [name_u]George[/name_u], [name_u]Oliver[/name_u], [name_m]Maximus[/name_m], [name_m]Caius[/name_m], and [name_m]Atticus[/name_m] are fab! [name_m]Caius[/name_m] is definitely intriguing me right now 
@vida [name_m]Beowulf[/name_m] is just divine! [name_m]Lysander[/name_m], [name_m]Aragorn[/name_m], [name_m]Alistair[/name_m], [name_m]Atticus[/name_m], [name_m]Christopher[/name_m], [name_m]Casimir[/name_m], [name_m]Ulysses[/name_m], and [name_m]Nikolai[/name_m] are genius recommendations 
Lav! One of my fave Slavic names - it means [name_m]Lion[/name_m] in Serbian :)))) itās short to spell and easy to say!
I love [name_u]Lionel[/name_u] and no one has said that one. It means little lion.