I checked my Carroll Co Cem books. I have several volumes and couldn't find them. But there are many Algiers (with various spellings of that name)in the Wesley Hampton Cem. And go back as far as birth date 1810.

Have you found out where their parents are buried? I don't see them in the volumes I have either. Perhaps someone else could ck other volumes.

There is a Henry A Miller but born in 1910. He's in Wesley as well.