Arbre généalogique
a tree is spelled 'arbre' (masc.) in French
The name Dimitri in French is also spelled Dimitri, pronounced as "dee-mee-TREE".
A family tree is "un arbre généalogique" in French.
The format of a family tree is the same regardless of what language you use.
Un dattier (masc.) - The fruit is spelled 'une datte', with a double 't' in French.
Casey is typically spelled and pronounced the same in French.
Grands-parents.
If that's a first name or family name, that would be spelled the same.
August is spelled 'août' in French.
un arbre généalogique
Emily is spelled Émilie in French.
"Cat" in French is spelled "chat".