I've looked up the name, or tried to, but I couldn't find anything behind the name's meaning. It's likely it could be an invented name, perhaps a combination of names or sounds his mother made up. BTW, it sounds exactly like the word jealousy, or at least that's how I've been saying it. Ot is it ja-lay-see?
It's possible that Jalacy might have been based on jalousie, a type of window patented in 1901; the name comes from the French word jalousie (pr. zhal-loo-zee;
https://forvo.com/search/jalousie/fr/); which means "jealous" in French; however in English, the word is pronounced exactly like jealousy. Perhaps his mother (or whoever named him) was inspired by that but spelled it by sound (Jalacy instead of Jalousie). That's just a guess, though, nothing concrete behind it.
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“Ideals are like stars; you will not succeed in touching with your hands. But like the seafaring man on the desert of waters, you choose them as your guides, and following them you will reach your destiny.”
-Carl Schurz
This message was edited 5/29/2020, 1:19 AM