- CELT
- Ancient Briton, e.g.
- Ancient people of western Europe
- Chisel-shaped tool
- Irishman
- Irishman, for one
- Gael, for one
- Prehistoric chisel-shaped tool
- Druid
- Gael
- Prehistoric tool
- Ancient Briton
- Resident of ancient Gaul
- Boston cager, for short
- Druid, for one
- Irish native
- Jayson Tatum, e.g.
- Breton or Welsh
- Man in green with Red?
- Irish ancient
- Cousy or Bird, for short
- KG or Big Baby
- Cager in green
- Ancient Breton
- Iron Age conqueror
- Ancient British Isles settler
- Welshman or Gael
- TD Garden baller, informally
- Many a resident of Gaul circa Caesar's invasion
- Invader of Thermopylae, 279 BC
- Galatian, e.g.
- Early Briton
- Welshman, for one
- Ancient Irishman
- Boston hoopster, briefly
- Cornishman, for one
- Stonehenge worker
- Bird, once
- Boston cager, briefly
- Cornishman, for example
- Breton, for one
- Dublin native, e.g.
- FleetCenter NBAer
- NBA cager Paul Pierce, briefly
- Druid, e.g.
- Welshman or Irishwoman
- Beantown player
- British invader of yore
- Boston basketballer, for short
- Druid, for example
- Early Brit
- Larry Bird or Kevin McHale, briefly
- Irishman, say
- BOS baller
- Cornishman or Welshman
- Cardiff native
- Highlander
- Druid or Gael
- Gael or Breton
- Druid or Gaal
- Worshiper of the sun god Beal
- New England NBAer
- Boston NBAer
- FleetCenter cager, for short
- Beantown hoopster, for short
- Boston NBAer, briefly
- Boston hoopster, for short
- Bird was one, briefly
- Breton, e.g.
- Gael or Druid
- Beantown athlete
- Breton or Gael
- Player under Auerbach, familiarly
- Irish person, e.g.
- TD Garden NBAer
- Hibernian, e.g.
- Gaelic speaker
- Gaul or Breton
- NBA player
- Scot's ancestor
- Welshman
- Boston basketballer, briefly
- Ancient Brit
- Boston hoopster
- Hebrides resident
- NBAer
- NBAer, in headlines
- Bird, for all the '80s
- Britannic forebear
- Irish forebear
- Ancient Gaul
- FleetCenter player, for short
- Cornish speaker
- Sixer rival
- Tall blond race.
- Breton.
- Hibernian.
- Scot or Irishman.
- Stone ax of early times.
- Ancestor of the Irish and Welsh.
- Welshman or Breton.
- Cave dweller's stone axe.
- Prehistoric axe.
- Inhabitant of 58 Across.
- Ancient axe head.
- Prehistoric ax.
- Gaul, Briton, Scot or Welsh.
- Ancient tool
- Highland Scot, for one
- Prehistoric stone implement
- Welshman, e.g.
- Primitive chisel.
- Prehistoric ax head.
- Archaeologist's find.
- Ax-shaped implement.
- Dubliner.
- Prehistoric implement.
- Certain European.
- Boston player, for short
- Stone Age tool
- Welsh or Breton
- Breton or Briton
- Welshman or Irishman
- Native of Cardiff
- Native of Tara
- Early Scot
- Person from Tara
- Highland Scot
- Pict rival
- Scot, for example
- A Druid, for one
- Briton or Breton
- Tara native
- Breton or Welshman
- Boston athlete
- Cornishman
- Scot or Breton, e.g.
- Scot, for one
- Stonehenge builder
- Welshman or Scot
- Boston player, informally
- Northwest European
- Irishman or Welshman
- Irishman, e.g.
- Saxon foe
- Bygone Briton
- Boston cager, informally
- Knick rival
- Bird, e.g., once
- Invader of Rome in 390 B.C.
- European of the Iron Age
- Hibernian, for one
- Bill Russell or Larry Bird, briefly
- Influence for Enya, historically
- TD Garden athlete, informally
- Speaker of Welsh or Breton
- Roman's foe in the Gallic Wars
- British Isles inhabitant during the Iron Age
- Old Brit
- Bygone Brit
- Mary Robinson or Mary McAleese
- Bostonian, quite possibly
- Briton of old
- Boston b-baller
- Boston player, briefly
- Gael or Breton, e.g.
- Irish or Welsh ancestor
- Pre-Roman European
- Early Irishman
- British invader of old
- Irishman or Welshman, e.g.
- Cornishman or Welshman, e.g.
- Old English inhabitant?
- Old-school Briton
- Boston hoopster, informally
- Boston hoopster, cut
- Brit's ancestor
- One may hail from Wales
- Boston NBA player, briefly
- Eire man
- Early European
- Forerunner of the Irish and Welsh
- Gael, e.g.
- European invader of old
- Irish ancestor
- Worshipper of the sun god Beal
- Early settler of England
- Welshman or Irishwoman, e.g.
- Bob Cousy, for most of his career
- Hoopster with a shamrock logo, briefly
- Irishman or Scotsman
- Knick or Sixer rival
- Boston hooper, for short
- Boston baller, for short
- Boston NBA player, for short
- Bird or Cousy
- Briton of yore
- Highlander, e.g.
- Manxman, e.g.
- Irish speaker, say
