Balthazar 🤌

The name Ea-nāṣir is about 4000 years overdue for a comeback.

Agamemnon

Galahad

Eleanor

Emeline

Emeric

Lancelot

Siegfried

Évelyne is faily common around here still.

Gilgamesh is one I haven't heard in a hot minute, not sure about the comeback though.

I’m fond of “Gwendolyn” but I’ve never met or even known of one, to my knowledge.

Everett

Archimedes

I want people to go by their first two initials, and then the entire last name. Y'know, "H. G. Wells, J.G. Wentworth".

It just makes everyone sound more fancy and serious.

I think Millicent and Winnifred would be cute because you can shorten them to Millie and Winnie

Evelyn as a man’s name, if you want to be really old school.

May and June. I feel like there's a lot of younger Aprils but the other two month names seem like old lady names.

Agnes, Agatha, Germaine and Jack.

My vote is for Gretchen.

I have a relative named Agnes in her early twenties. Don't do it. I find the Texas A&M jokes to be unbearable and I'm sure I hear less than 10% of what she hears

Mildred, Evelyn, Opal all names of my aunts +3 generations older than mine. Also try Betty as a diminutive for Elizabeth, Gerald, Hank, Errol, Mabel, Jerome, and Cordelia. These all scream white Midwestern US farmer to me.

Errol is most likely to have gotten into a bit of trouble and really seen the world when he was drafted for WWII.

Zebulon -- traditional Biblical name. Maybe still used in Israel, but not many Americans have used it since the days of Zebulon Pike (Pike's Peak) and Zebulon Vance (Civil War era NC governor).

I would say Marceline, but adventure Time kind of kicked that overdue revival into high gear.

How about Wanda. I had an aunt Wanda. She was kinda mean, but she had a lot of boyfriends.

Mordechai

Constantine

Itzcoatl

Axayacatl

Axochitl

Perhaps not as old as requested but

Ronald, Marianne, Cynthia, Evangeline, Melinda, Caesar, Magdalena, Betty, Rosetta, Balthazar, Thadeus, Lazarus, Otto, Bartholomew, Miranda

My twelve year old is Evelyn. My 14 year old is Genevieve. Which is apparently still out there but I thought it was pretty uncommon when we named her.

Blessica

A lot of people these days seem to think that "Adolf" should come back.

I am not one of those people.

Edna.

Any common ancient Roman name. Not enough "imuses" or "cleses" suffixing names.

Kolanakimus Huskerclese

I find Mildred an ugly name, sounds like it means Mildew but worse. Like the most dreadful mildew.

Opal I think is pretty, that's a good name. As you say you like minerals, Ruby not bad either, my mom had an aunt Ruby Jack, born around 1920.

I did know a baby Eugenia, her parents were Costa Rican and pronounced it closer to Elu-henia than Eyu-henia or you-geenya. I think that one is prettier in Spanish but not bad in English.

Beryl

Emmett

Isambard

Myrtle

Utnapishtim.

My wife liked the idea of Eleanor if we had a girl, I never liked it, but luckily we had a boy, so we didn't have to cross that bridge.

At work, we named the old, decrepit copier Opal in an effort to humanize it and get people to treat the old girl with more love and patience.

Dutch names.

Truitje Fiep Toos Wies (my grandma) Pleun Fons (my uncle) pronounced Funs in South Limburg

Bartholomew