Pisces · by personality
Sherlock Holmes · Baker Street
Mary Morstan: zodiac sign and birth chart
Mary Morstan has no canon birthday. Conan Doyle never gives one. Read from her personality, she is a Pisces. She is the client from The Sign of Four, a clever, kind governess who becomes Watson's wife. Four placements in Pisces suit her calm, gentle manner. Aries Venus and Mars give her a spine.
- SunPisces
- MoonPisces
- RisingPisces
- MercuryPisces
- VenusAries
- MarsAries
SourceNo canon birthday: Conan Doyle's stories give Mary Morstan no date. The chart is NEBO's take, read from her personality.
Birth chart
Mary's chart at a glance
No canon birthday, so this is NEBO's take, read from her character.
- Fire2
- Earth0
- Air0
- Water4
- Mostly water. 4 of her 6 placements are water signs.
- Double Pisces. Sun and Moon in the same sign, about 1 in 12 people have that.
- About 1 in 15 birthdays get Mary in the app's Sherlock Holmes world.
NEBO's take
No birthday in canon. Her personality says Pisces.
We ran Mary through the same model that matches people to characters in the app, and looked at which chart gets her most often. It reads her as water with a spark: gentle, calm and braver than she looks.
Canon
No canon birthdayNever given in Conan Doyle's storiesNEBO's take
Pisces SunRead from her personality- Sun
CanonNot in canonNEBO's takePisces
Pisces is gentle and calm. Mary arrives at Baker Street composed, though her case is deeply strange.
- Moon
CanonNot in canonNEBO's takePisces
A Pisces Moon trusts a feeling. She goes to meet a stranger's mysterious letter with Watson beside her.
- Rising
CanonNo birth timeNEBO's takePisces
No birth time in canon. First impression: a quiet, plainly dressed young woman with a steady voice.
- Mercury
CanonNot in canonNEBO's takePisces
Pisces Mercury is kind with words. Watson is struck by her manner from the first minute.
- Venus
CanonNot in canonNEBO's takeAries
Aries Venus loves boldly once it's decided. She is the woman Watson falls for on sight.
- Mars
CanonNot in canonNEBO's takeAries
Aries Mars goes where the case leads. She follows it to a stranger's house at night.
What canon does give: a clever, kind young woman who keeps her head in a very strange case. Pisces is the kindness. Aries is the nerve.
How she shows up
Why she's like this
Pisces is the sign of gentleness, intuition and quiet courage. Mary hits it in scenes fans know.
CorePisces Sun
Calm in a strange case
She comes to Baker Street with a case that begins with a father who vanished and a pearl that arrives every year, and she tells it calmly.
The Sign of Four
FeelingsPisces Moon
Follows the letter
A letter tells her to meet an unknown person, and she goes, with Holmes and Watson beside her.
The Sign of Four
LoveVenus in Aries
Wins Watson
Watson falls for her almost on sight, and she is the one he marries.
The Sign of Four
In a fightMars in Aries
The agent's aim
In the BBC series she is a former agent-for-hire with a secret past, and a very good shot.
Sherlock (BBC), His Last Vow · spoiler
Your turn
Which Sherlock Holmes character are you?
Pick your birthday. Your Sun sign gives a first answer right here, then the app reads your whole chart.
Aries girls get Irene Adler most often. Aries guys get Mycroft Holmes.
You and Mary: Next-door signs. Different instincts, lots to learn.
Taurus girls get Sally Donovan most often. Taurus guys get Inspector Lestrade.
You and Mary: Signs that cheer each other on. Good team.
Gemini girls get Mary Morstan most often. Gemini guys get Sherlock Holmes.
You and Mary: Signs at a right angle. Friction, the useful kind.
Cancer girls get Molly Hooper most often. Cancer guys get Dr. Watson.
You and Mary: Same element, water. Easy chemistry, same pace.
Leo girls get Eurus Holmes most often. Leo guys get Charles Augustus Magnussen.
You and Mary: Signs that speak different languages. Curious mix.
Virgo girls get Molly Hooper most often. Virgo guys get Sherlock Holmes.
You and Mary: Opposite signs. You see each other's blind spot.
Libra girls get Irene Adler most often. Libra guys get Professor Moriarty.
You and Mary: Signs that speak different languages. Curious mix.
Scorpio girls get Molly Hooper most often. Scorpio guys get Dr. Watson.
You and Mary: Same element, water. Easy chemistry, same pace.
Sagittarius girls get Irene Adler most often. Sagittarius guys get Wiggins.
You and Mary: Signs at a right angle. Friction, the useful kind.
Capricorn girls get Sally Donovan most often. Capricorn guys get Inspector Lestrade.
You and Mary: Signs that cheer each other on. Good team.
Aquarius girls get Eurus Holmes most often. Aquarius guys get Sherlock Holmes.
You and Mary: Next-door signs. Different instincts, lots to learn.
Pisces girls get Mary Morstan most often. Pisces guys get Dr. Watson.
You and Mary: Same sign. You'd get each other without trying.
That's your Sun sign talking. The app reads your Moon, Venus, Mars and the rest, and the answer can change.
Get my real Sherlock Holmes character→Chemistry
Who Mary clicks with, and who she clashes with
Read from the charts on their pages. The plot may disagree.
Clicks with
- Inspector LestradePisces Moon+Capricorn MoonMoons in friendly signs: they know how to settle each other down.
- WigginsPisces Sun+Cancer SunSuns in the same element: they want the same things and go after them the same way.
- Dr. WatsonPisces Sun+Cancer MoonSun and Moon in the same element: around each other, they feel seen.
Clashes with
Pick a side
Are you more Mary or Sherlock?
Your birthday settles it. The app reads your whole chart and tells you who you really get.
Similar charts
Who else has Mary's chart
Famous Pisces with her placements
Their charts line up with NEBO's take on Mary. A chart match only: none of them is connected to this page.
Tyler, the CreatorPisces Sun · Mercury in Pisces, Venus in Aries
YeatPisces Sun · Mercury in Pisces, Mars in Aries
Jhené AikoPisces Sun · Pisces Moon, Mercury in Pisces
SugaPisces Sun · Mercury in Pisces, Venus in Aries
HyunjinPisces Sun · Mercury in Pisces, Mars in Aries
Queen LatifahPisces Sun · Mercury in Pisces, Venus in Aries
Mary in real life
The app casts Tems (Gemini), Hwasa and KallMeKris (both Cancer) as Mary, so the Suns are mixed.
Characters like her in other worlds
Same chart pattern in our model, different universe.
Sherlock Holmes
Characters like Mary
Closest charts first: shared signs, same elements.
- WigginsCancer Sun · Cancer Moon
- Irene AdlerScorpio Sun · Sagittarius Moon
- Dr. WatsonScorpio Sun · Cancer Moon
- Molly HooperCancer Sun · Cancer Moon
- Mrs. HudsonCancer Sun · Cancer Moon
- Eurus HolmesLeo Sun · Aquarius Moon
- Professor MoriartyLibra Sun · Sagittarius Moon
- Charles Augustus MagnussenLeo Sun · Taurus Moon
Which Sherlock Holmes character are you?
Add your birthday and the app finds your Sherlock Holmes character, your place at Baker Street and how close you are to Mary.
Are you Mary? Find your character→Questions
Mary's zodiac sign: what people ask
What zodiac sign is Mary?
Canon never says. Conan Doyle never gives one. By personality, NEBO's take is Pisces.
When is Mary's birthday?
It isn't given anywhere in canon, so there is no real date to point to.
Is Mary a Pisces?
By personality, yes: calm, kind and braver than she looks. NEBO's model puts four placements in Pisces. It's NEBO's take, not canon, because no birthday exists.
What is Mary's birth chart?
NEBO's take: Sun in Pisces, Moon in Pisces, Pisces rising, Mercury in Pisces, Venus in Aries, Mars in Aries. Read from her personality, not from a canon date.
What element is Mary?
Water. Pisces is a water sign, and 4 of her 6 placements are water too.
Who is Mary most compatible with?
By chart, Inspector Lestrade, Wiggins and Dr. Watson. Pisces Moon and Capricorn Moon: they know how to settle each other down.
Unofficial fan page. Sherlock Holmes and its characters belong to their respective owners. NEBO is for entertainment.
NEBO is for entertainment and self-reflection, not medical, psychological or financial advice.
TermsPrivacyImpressumCelebrity birth chartsZodiac signsFandom charactersZodiac compatibility2027 HoroscopeCelebrity birthdays© 2026 NEBO LABS LLC



