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{{about|"Eustace" as a given and family name}}
{{Use dmy dates|date=May 2025}} 
{{Infobox name|name=Eustace|gender=Male|language=[[Greek language|Greek]]|language2=[[Latin]]|image=File:Bayeux Tapestry scene55 Eustach.jpg|region=[[Christianity]]|origin=[[Ancient Greek|Greek]]|meaning=English form of [[Eustachius (disambiguation)|Eustachius]]|usage=[[Middle English|English]]|caption=[[Eustace II, Count of Boulogne|Eustace II]], showed on the Bayeux Tapestry|see also=[[Odo]], [[Edward]], [[William]], [[Sigfred]]}}
'''Eustace''' ({{IPAc-en|ˈ|juː|s|t|ᵻ|s}} {{respell|YOOS|tis}}) is the rendition in English of two phonetically similar [[Ancient Greek language|Greek]] given names:
*'''Εὔσταχυς''' (''Eústachys'') meaning "fruitful", "fecund";<ref>[http://www.behindthename.com/name/Eustace Behind the Name: Meaning, Origin and History of the Name Eustace<!-- Bot generated title -->]</ref> literally "abundant in [[grain]]"; its [[Latin]] equivalents are ''Fæcundus/Fecundus''
*'''Εὐστάθιος''' (''Eustáthios'') meaning "steadfast", "stable"; literally "possessing good stability"; its exact [[Latin]] equivalents are ''[[Constans]]'' and its derivatives, ''[[Constantius (disambiguation)|Constantius]]'' and ''[[Constantine (name)|Constantinus]]''.{{cn|date=May 2025}} 

Equivalents in other languages include [[Ostap]] (Ukrainian, Russian), [[:pl:Eustachy|Eustachy]] (Polish, Russian), [[:ru:Евстафий|Yevstaphiy]] (Russian), [[:it:Eustachio|Eustachio]] (Italian), [[:fr:Eustache|Eustache]] or [[:fr:Eustathe|Eustathe]] (French), Eustaquio (Spanish), Eustáquio (Portuguese), Eustaqui (Valencian), Ustes (Guyanese) and Eustice (English). The originally [[Hebrew Language|Hebrew]] name [[Ethan (given name) |Ethan]] or [[Eitan (disambiguation)|Eitan]] can also mean "steadfast" or "stable".{{cn|date=May 2025}} 

The Greek ''Eústachys'' is no longer used; ''Eustáthios/Ευστάθιος'' (usually transliterated ''Efstáthios'') on the other hand is still popular and often used in the informal or diminutive Στάθης (''Státhis'').{{cn|date=May 2025}} 

[[Eustis (disambiguation)|Eustis]] is a variant spelling.{{cn|date=May 2025}} 
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==Notable people with the name==

===Given name===
====Ancient era====
*[[Saint Eustace]] (died 118), Christian martyr
*Eustace or [[Eustathius of Mtskheta]] (died c. 550), Orthodox Christian saint
*[[Eustace of Luxeuil]] (Eustasius) (c. 560 – c. 629), saint and Abbot of Luxeuil

====Medieval era====
*[[Eustace I of Boulogne]] (died 1049), father of Eustace II
*[[Eustace II of Boulogne]] (c.  1015–1020 – c. 1087), companion of William the Conqueror, fought at the Battle of Hastings
*[[Eustace III of Boulogne]] (before 1060 – c. 1125), rebelled against King William II of England, son of Eustace II
*[[Eustace IV of Boulogne]] (c. 1129 – 1153), eldest son of King Stephen of England
*[[Eustace (Bishop of Ely)]] (died 1215), Lord Chancellor of England
*[[Eustace de Balliol]] (died c. 1209), Lord of Balliol
*[[Eustace Chapuys]] (c. 1490/2 – 1556), Ambassador for the Holy Roman Empire in the English Court during the reign of Henry VIII
*[[Eustace of Fauconberg]] (died 1228), Bishop of London and Lord High Treasurer
*[[Eustace Folville]] (died 1346), English outlaw
*[[Eustace fitz John]] (died 1157), magnate in northern England
*[[Eustace Grenier]] (died 1123), crusader lord and Constable of the Kingdom of Jerusalem
*[[Eustace the Monk]] (c. 1170–1217), mercenary and pirate
*[[Eustace de Vesci]] (1169–1216), English lord of Alnwick Castle, leader of the First Baron's War against King John I of England
*[[Eustace of Vilnius]] (died 1347), saint and martyr of the Russian Orthodox Church
*[[Ewostatewos|Eustathius of Ethiopia]] (1273-1352), Ethiopian saint who advocated for [[Sabbatarianism|Sabbath observance]]

====Modern era====
*[[Eustace Akwei]], Ghanaian doctor and politician
*[[Lord Eustace Cecil]] (1834–1921), British politician
*[[Eustace Conway]], American naturalist
*[[Eustace John]], Governor-General of Nevis
*[[Eustace Lycett]] (1914–2006), British special effects artist
*[[Eustace Miles]] (1868–1948), British real tennis player
*[[Eustace Mullins]], American writer
*[[Eustace George Willis]], British politician

===Surname===
Eustace is a [[Dalcassian]] surname.

*[[Adam Eustace]] (born 1979), English rugby union player
*[[Alan Eustace]], American computer scientist, record holder for a Stratosphere Jump
*[[Arnhim Eustace]] (born 1944), Vincentian politician, Prime Minister of Saint Vincent and the Grenadines
*[[Arthur Eustace]] (1926–2018), New Zealand former sprinter, athletics coach and administrator
*[[Bartholomew J. Eustace]] (1887–1956), American Roman Catholic bishop
*[[Cristina Eustace]] (born 1979), Mexican singer
*[[Dudley Eustace]], English businessman, director of Dutch companies
*[[Frank Eustace]] (1873–1932), American baseball player
*[[James Eustace, 3rd Viscount Baltinglass]] (1530–1585), Anglo-Irish Catholic noble rebel
*[[Jean Eustache]] (1938–1981), French filmmaker
*[[John Chetwode Eustace]] (c.1762–1815), Anglo-Irish Catholic priest and antiquary
*[[John Eustace]] (born 1979), English football player
*[[John Thomas Eustace]] (1825-1919), politician of the [[Cape Colony]]
*[[Joseph Lambert Eustace|Sir Joseph Lambert Eustace]] (1908–1996), Vincentian educator, businessman and politician
*[[Katharine Eustace]] (born 1975), New Zealand skeleton racer
*[[Mary Jo Eustace]] (born 1962), Canadian actress, singer and sous [[chef]]
*[[Peter Eustace]] (born 1944), English football player
*[[Robert Eustace]], pen name of Eustace Robert Barton (1854–1943), English doctor and author
*[[Rowland Eustace, 2nd Viscount Baltinglass]] (1505–1578), Anglo-Irish Catholic noble
*[[Scott Eustace]] (born 1975), English footballer
*[[Stuart Eustace]] (born 1979), English cricketer
*[[Thomas Eustace, 1st Viscount Baltinglass]] (c.1480–1549), Anglo-Irish Catholic noble loyalist
*[[Tim Eustace]] (born 1956), American chiropractor and politician

==Fictional characters==
*[[Eustace Bagge]], the farmer from the 1999 [[TV series]] ''[[Courage the Cowardly Dog]]''
*Sir Eustace Brackenstall, ''[[The Adventure of the Abbey Grange]]'' by Arthur Conan Doyle
<!--*Eustace Caradoc, Lord Miltoun, in [[John Galsworthy]]'s novel ''The Patrician'' (1911)-->
*Commissioner Eustace Dolan, ''[[Spirit (comics character)|The Spirit]]'' 1940s comic strip character
*Ethne Eustace, ''[[The Four Feathers]]''
*[[Eustace Clarence Scrubb]], from ''[[The Chronicles of Narnia]]''
*Eustace Strytch, from ''[[The Adventures of Jimmy Neutron, Boy Genius]]''
*[[Eustace Tilley]], ''The New Yorker'' magazine character
*Eustace Wooster, cousin of [[Bertie Wooster]], in [[P. G. Wodehouse]]'s ''[[The Inimitable Jeeves]]''
*Eustace Winner, from [[Ace Attorney Investigations 2: Prosecutor's Gambit|''Ace Attorney Investigations 2: Prosecutor’s Gambit'']]

==See also==
*[[Eustice]], a surname
*[[Maurice Eustace (disambiguation)]]

== References ==
{{reflist}}
{{given name|type=both}}

[[Category:Given names of Greek language origin]]
[[Category:English masculine given names]]
[[Category:Masculine given names]]
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