The name Gellert means Brave With Spear and is of Hungarian origin. Gellert is a name that's been used primarily by parents who are considering baby names for boys.
From the name Gerard
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Baby Names Tip: If you're expecting multiples, try not to make the names too matchy-matchy. After all, they're going to have to share their appearance, birthdays, clothes, and many other things! They shouldn't have to share their names, too.