Manius is one of the lesser-used Roman forenames, far less popular than Lucius, Marcus et al, both in ancient times and today. Its meaning is actually uncertain: another possible origin is from manes, deities of the underworld.

When ordering a baby name, hold the mayo.

God of the underworld in Lithuanian mythology, known as "the phantom of the dead". He is a one-eyed, prophetic trickster capable of raising whirlwinds and leading the host of the dead through the skies.

God of cattle, earth, and the underworld worshipped in Slavic areas. He is considered the opponent of the thunder god Perun, and is imagined as a dragon-like figure — resembling a cross between a bear and a snake that devours lifestock.

This mini-member of the Ivo-Yves family of names is unlikely to appeal to English speakers, as it sounds like "ew".

The Japanese word for the land of the dead. It's not quite Heaven nor Hell, although it more closely resembles the latter. It's also the name of a video game, which is likely why five baby girls were named Yomi one recent year.

The name of two figures in Norse mythology: one the father of Nótt, the personification of the night; the other a son of Loki and Sigyn, who is transformed into a wolf (or killed by one, depending on your source). The name may mean "narrow", or possibly "demon of the dead".

Form of Ivar most common in Estonia.

Tiamat is a goddess of the sea worshipped in ancient Mesopotamia, also seen as the creator goddess in some texts.

Unusual and rhythmic, Macaria is the feminine form of the ancient Greek Makarios or the Latinized Macarius. It could be an unexpected way to get to cool nickname Mac, without using Mackenzie, Mackinley, and similar.

Shiva is one of the principle deities of Hinduism. Shiva is the powerful god of both destruction and resurrection but is also associated as the patron god of yoga, meditation and arts. Shiva's wife is Parvati, the mother goddess of creation.

Allani, also known as Allatu, was a Hurrian goddess of the underworld worshipped in the Middle East historically. Allani was associated with the determination of fate.

In Hungarian mythology, Erlik is the god of death and the underworld.

Hypnos is the personification of sleep in Greek mythology.

A Polish goddess of seasonal rites and rebirth. She is known to be the bringer of death and the symbol of winter, and is the counterpart of the spring goddess — either Lada or Vesna.

Nekane is the decidedly modern, upbeat-sounding Basque form of the sorrowful and dated Spanish Dolores. Basque names, largely unknown in English-speaking countries, offer a fresh lexicon of names, and Nekane is one of the more appealing. An interesting update for Nicole.

Meaning "implacable; unceasing", Alecto is the name of one of the three Furies in Greek mythology: deities of the Underworld who were responsible for punishing the crimes of humanity. J. K. Rowling used the name for a Death Eater, Alecto Carrow, in the "Harry Potter" series.

A beautiful girl name with a melodic sound, Malalai is best known for Malalai of Maiwand, a woman who is considered a national folk hero in Afghanistan. She was a 19th-century freedom fighter, credited for the Afghan victory in the 1880 Battle of Maiwand. The well-known Pakistani activist Malala Yousafzai was named after her, with Malala being a more modern variant of Malalai. Another significant namesake is Afghan activist Malalai Joya.

Mourning was recorded as a name among enslaved people in 19th-century America, where other names that capture the atrocities of slavehood — such as Suffer, Misery, and Hardtimes — were used as well.