Is [name]Isadore[/name]/[name]Isidore[/name] really a male name? I have never heard of a man or boy with this name and would be shocked as it seems so feminine to me. Nameberry has both spellings listed as masculine only. Could this be right?
Isidore is a male name, yes. It means “gift of Isis”, dore/dora means gift. It’s pronounced IZ-uh-dawr. It’s just like Theodore, with IZ-uh in front instead of Theo.
Isadora and Isidora are the feminine versions.
Edit: It’s used a bit by Jews, but I guess if you don’t interact a lot with Jewish communities it isn’t that strange if you haven’t seen it around.
As [name]Ottilie[/name] said, it is a masculine name.
I [name]LOVE[/name] the name [name]Isadora[/name], however, and it is on my list. 
It is a masculine name. It’s rather old-fashioned but it is “real” - it was a bit of a family name for me and I’ve known others as well. It got more use in the early part of the 20th C. I’ve never known one younger than 70.
I’ve known a LOT of male Izzys - many were Isaacs, but some were Isidores.
Not sure what makes it particularly feminine compared to [name]Theodore[/name], [name]Salvatore[/name], etc?
I don’t mind [name]Isadora[/name]/[name]Theodora[/name] but to me [name]Isadora[/name] doesn’t make [name]Isidore[/name] femme any more than [name]Raphaela[/name] or [name]Benjamina[/name] makes [name]Raphael[/name] or [name]Benjamin[/name] femme. (Which is, to say, it doesn’t).
I have a great-uncle named [name]Isidore[/name], so it’s all-male to me.
It’s also (tend to be) feminine to me. [name]Isidore[/name] is more masculine, but [name]Isadore[/name]/[name]Isadora[/name] is just like [name]Isaure[/name]/[name]Isaura[/name] to me, both feminine.
Yes, it’s a masculine name. [name]Theodore[/name], [name]Isidore[/name], definitely not for the girls.
Wow… it surprises me that I overlooked this… thanks everyone!
I’m well aware that [name]Isadore[/name]/[name]Isidore[/name] are male names, and I’m also very aware of the popular opinion on this board so I will probably get flack for this, but:
I prefer [name]Isadore[/name]/[name]Isidore[/name] on a girl. They’re so unheard of for boys that I think it’s fine to use them. And really, honestly, your daughter would not be scarred for life just because her name doesn’t end in A. So it’s the male version of the name, so what? [name]Isadore[/name]/[name]Isidore[/name] sounds gender ambiguous to me, and even the meaning is ambiguous, not like it means “manly” or something. Gift of [name]Isis[/name] is a pretty cool meaning for a girls’ name, I think.
[name]Just[/name] my opinion.
I’m not going to like maul you over [name]Isidore[/name]/[name]Isadore[/name] but I don’t get the logic of this. I mean it IS a pretty cool meaning, but [name]Isidora[/name]/[name]Isadora[/name] has the same meaning in any case? And then there’s using [name]Isis[/name] itself, which is both feminine and not a-ending, and has a long history of female use?
Not directly related to your post but I was thinking about my own PP and I forgot a source of [name]Izzy[/name] of the male Izzys I’ve known: I remembered [name]Isaac[/name] and [name]Isidore[/name], but forgot Issachar. I don’t really recommend Issachar for a girl’s name either…? But there’s probably one out there. With the similarly gender-ambiguous meaning of “there is a reward.”
I don’t know that I think the only manly names are the ones that literally mean manly? Leaves a rather tiny palette for the boys, as well as questionable gender-roles - surely they can have names that mean generally benign or even softer meanings, like “gracious” or “gift” or whatever, rather than just literally “it’s a manly man/a freakin’ boy, okay”?! lol.
As a Catholic, Isidore/Isadore is ALL-MALE for me. St. Isidore of Seville was a Spanish Doctor of the Church. Why would anyone name their daughter these names when there are perfectly fine feminine versions? Isidora, Isadora and Isidra are all legitimate girls names. How a name “sounds” shouldn’t be the most important consideration for choosing a specific moniker. One should also consider the etymology or origins of a name.
My (Catholic) great-grandfather was [name]Isadore[/name], so it has always been a male name to me because he and the saint are the only Isadores I had ever heard of before this post. But people name their little girls really masculine names all the time ([name]Emmerson[/name] is really popular on girls despite the “son” ending, and I went to school with a girl named [name]Michael[/name]). On the other side, people mistake my son’s name ([name]Gabriel[/name]) for a girl’s name because of the -elle sound at the end, even though it’s been a male name in many cultures for thousands of years. You just never know.
We named our cat [name]Isidore[/name], and he’s a male cat. It’s always been a masculine name to me, what with St. [name]Isidore[/name] and all. Though everyone thinks he’s a girl; my mother claims it’s because of [name]Isadora[/name] [name]Duncan[/name].
This is exactly what I thought. [name]Isidore[/name] couldn’t be more masculine to me!