ances tree

The origin of the name Aaron is debated—some say it was derived from Hebrew, while others claim it originated in Ancient Egypt. In the Old Testament, Aaron, the older brother of Moses who was appointed by God to be his brother's spokesman, was the first High Priest of the Israelites. The Hebrew version is Aharon—in Yiddish it can be Aaran—and the name appears in Arabic as Haroun or Harun.

Double exposure: 1970s rock sensation (Mamma Mia) and scholar/diplomat name in Israel.

Abbott is a neglected masculine surname with religious overtones as the head of a monastery. Though the feminine nickname Abby could be a slight drawback, Abbott is still an attractive offbeat possibility.

Abel, the name of Adam and Eve's unfortunate younger son, compensates with positive connotations: capable, competent, ready and willing.

Abiah is a Biblical name that appears for both female and male figures. It may be considered the same as the name Abijah in the Bible; one female Abijah was a queen and ancestor of Christ. Abiah may also be considered a relative of the Arabic name Abia. However you spell or pronounce it -- a - BY -a or a - BEE - a -- this name can be an original way to the nickname Abi.

Abigail has been in for so long -- the name has ranked in the US Top 100 since the late 1980s -- it's amazing that it isn't more out by now. But Abigail's biblical and historic roots make it a fashionable classic rather than a passing fad.

Abijah is a truly unusual, truly unisex, truly appealing biblical name. There were several male Abijahs in the Bible, one of them, known as Abijah of Judah, was the fourth king of the House of David, and also a couple of females.

New Testament, Texas, and Kansas place-name more fitting for a girl.

This neglected Biblical name--it was the name of the commander of Saul's army and appears twice in the New Testament--is ready to flee Dogpatch. It was regularly used in the nineteenth century, but was pretty much demolished by the long-running hillbilly comic strip L'il Abner, which began in 1934 and ran through 1977. A more respectable namesake is Abner Doubleday, who has been credited with inventing baseball.

Abraham is among the most classic baby names that's still widely-used today, popular for its references to both the Bible and American history. The Biblical Abraham was the first of the Old Testament patriarchs and is considered the founding father of the Jewish people. He was originally named Abram, until, according to Genesis, he was told, "No longer shall your name be Abram, but your name shall be Abraham, for I have made you the father of a multitude of nations."

Abram was Abraham's original name in the Bible; it's more user-friendly but with a bit less gravitas. And it does offer that cool nickname Bram, as well as the friendly Abe. After some early American usage, in 1936 Abram completely disappeared for nearly forty years, until its return in the 1970s.

Most names with the Ab beginning, including the more familiar Abigail and Abner, mean father, as does this streamlined Arabic choice. American children might recognize Abu as the name of Aladdin's pet monkey in the Disney film.

Spelled with or without the final "h," Achsah, pronounced AK-suh, was the daughter of Caleb in the Old Testament. We can't imagine anyone finding it greatly appealing.

This name's buttoned-up British vibe is what makes it cool - that, and the fact that it was chosen by Anne Bronte as her pseudonym - Acton Bell. That's quite the literary - and may we add feminist - credential for a name. For those with an adventurous edge, Acton is one of the highest peaks in Antarctica.

Ada is one of the classic baby names for girls that is suddenly super stylish again. A favorite at the end of the nineteenth century, Ada is an alternative to the over-popular Ava. Ada is also part of the trend toward simple, old-fashioned names beginning with a vowel, like Ivy and Ella.

Adam -- a primal Old Testament name -- was revived as a 1960s cowboy name. Adam is not as popular as it once was and feels ready for a respite, replaced by newer A names like Aidan/Aiden, Avery and Axel. Its most prominent current bearers include Adams Sandler, Levine, Brody and Driver -- who plays a character named Adam on Girls.

This Ethiopian boy name looks like a shortening of popular Addison, but has separate roots. Nonetheless, with Addison's popularity, Addis would fit in while standing out as a boy's name in English-speaking countries. Addis means "new", as seen in Ethiopia's capital Addis Ababa, meaning "new flower".

Despite its origin as a patronymic meaning "son of Adam", Addison really caught on for baby girls in the US around the turn of the millennium, following in Madison's footsteps to peak at #11 in 2007 and again in 2010.