Sibling names for Arthur
Picking a sibling name for Arthur? Each name below is scored on how closely it matches Arthur's style and how well-known it is, with points off for rhyming or starting with the same letter.
Brother names for Arthur
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Wesley 87
WES-lee
Western meadow; green expanse
Brings English roots alongside Arthur's Celtic ones; the same vintage and classic feel as Arthur.
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Robert 84
RAH-bert
Bright fame and shining honor
An even two-syllable name, easy to say; shortens to Rob and Bob.
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Leonardo 81
lee-oh-NAR-doh
Brave as a lion; artistic genius
About as well-known as Arthur right now; a crisp consonant start.
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Martin 77
MAR-tin
Of Mars; valiant peacemaker and leader
Means "of mars"; opens on "M" against Arthur's "A".
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Lucian 75
LOO-shən
Light and brilliant beacon
A different first letter from Arthur — easy to tell apart on school and doctor's forms; vowel-heavy, so it flows rather than clips.
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Quentin 74
KWEN-tin
Fifth-born child; classic dignity
Vintage and classic, matching Arthur; rarer than Arthur, if you want contrast.
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Thomas 71
TOM-əs
Twin; steadfast companion and honest seeker
Consonant-forward, so it lands with a bit of edge; Aramaic where Arthur is Celtic — a mix.
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Isaac 70
EYE-zək
One who laughs; bringer of joy
The double letter in Isaac reads gently; a steady two-beat name.
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Silas 68
SYE-ləs
Man of the green forest; woodland traveler
Shortens to Si; carries the meaning "man of the green forest".
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Ryan 67
RYE-ən
Little king; youthful royalty
Matches Arthur syllable for syllable; a different ending sound from Arthur.
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Edward 65
ED-werd
Wealthy guardian and protector
More consonants than vowels — a firmer sound; the same vintage and royal feel as Arthur.
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Simon 64
SYE-mən
The listener; one who hears and understands
An older name coming back into use; fewer letters on the page than Arthur.
Sister names for Arthur
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Lillian 88
LIL-yən
Lily flower; purity of heart and grace
Clearly reads as a girl's name next to Arthur; the same 2 syllables as Arthur, so they balance said together.
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Clara 87
KLAIR-uh
Bright, clear, famous, and crystalline
Opens on a firm consonant; a vintage name having a comeback.
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Vivian 82
VIV-ee-ən
Alive, lively, and vibrant spirit
An "-n" ending, the kind used across a lot of unisex names; means "alive".
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Lydia 81
LID-ee-uh
Noble woman from Lydia; cultured artist
Brings Greek roots alongside Arthur's Celtic ones; a different first letter from Arthur — easy to tell apart on school and doctor's forms.
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Maria 76
Classic and vintage style
A fuller name of 3 syllables; vintage and classic, matching Arthur.
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Caroline 75
KAIR-oh-lyne
Free person of noble warmth and gentility
Arthur ends on an "r", Caroline on an "e" — a clean contrast; a longer name on the page — room for a nickname.
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Audrey 72
AW-dree
Noble strength and timeless dignity
Shortens to Audie; about as well-known as Arthur right now.
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Nora 70
NOR-uh
Honor, shining light, and moral strength
Starts with "N", not Arthur's "A", so the two never blur; carries the meaning "honor".
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Stella 68
STEL-uh
Celestial morning star; hope and guidance
Vintage, like Arthur; Arthur ends on an "r", Stella on a soft vowel — a clean contrast.
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Sophie 67
SOH-fee
Wisdom and insightful discernment
Greek where Arthur is Celtic — a mix; no doubt it is the sister name.
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Iris 65
EYE-ris
Rainbow bridge; vivid purple iris flower
Shorter written out than Arthur; well-known but not in the very top handful.
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Daisy 64
DAY-zee
Day's eye; cheerful white and yellow wildflower
The same vintage feel as Arthur; vowel-heavy, so it flows rather than clips.
Reading the scores
Read the number as "how well this goes with Arthur", not "how good this sibling name is". Style, length, first letter and sound all feed into it, and rhyming pulls it down hard. How the score works.
What makes a sibling set work
The names people regret are the ones that rhyme, start with the same letter, or sit far apart in popularity. A good match for Arthur avoids all three. Arthur with Wesley or Lillian does that.
See also: middle names for Arthur · twin names for Arthur
Common questions
What names go well with Arthur for a sibling?
For a brother: Wesley, Robert, Leonardo, Martin.
For a sister: Lillian, Clara, Vivian, Lydia. These share Arthur's style and level of familiarity without rhyming or starting with the same letter.
Should a sibling name match Arthur?
It should feel like it belongs to the same family as Arthur, not like a matching set. That means a shared era or style — Arthur reads as vintage and royal, so lean that way — but a different starting sound and ending. Names that rhyme with Arthur or also start with "A" get fewer points here.
Does Arthur need a sibling name of the same origin?
It helps but is not required. Another Celtic name (like Arthur) gets a small scoring bonus because shared roots read as deliberate, but a strong style match with Arthur matters more either way.
How is the match score for Arthur worked out?
Each name is checked against Arthur: a shared style and era counts the most, then how close the two are in popularity, then points come off for rhyming with Arthur, sharing its "A" start, or ending on the same sound. Full detail on the NamePairings how-we-score page.