Question: Which pre-Conquest bishop appealed to the king about the taking of estates that belonged to the Cathedral at Worcester?

Context paragraphs:
King's School, Worcester: The King's School, Worcester (also known as King's Worcester or KSW; locally as simply King's; archaically "Worcester Cathedral Grammar School" or "Worcester Cathedral King's School") is an English independent school refounded by Henry VIII in 1541.  It occupies a site adjacent to Worcester Cathedral on the banks of the River Severn in the centre of the city of Worcester.  It offers mixed-sex mainstream education that follows the UK National Curriculum to around 1,465 pupils aged 2 to 18.  At age 11, approximately two thirds of pupils join the senior school from its two junior schools, King's Hawford and King's St Albans, while others come from maintained schools in the city of Worcester and the surrounding areas that include Malvern, Redditch, Kidderminster, Evesham and Pershore.

Domfreiheit: In the Holy Roman Empire, the Domfreiheit (German: Cathedral Freedom) or Domimmunität (Cathedral Immunity) was the area immediately around the seat of the Bishop of a cathedral and its cathedral chapter, which was managed by the Domdechant; the English term is cathedral close.  This area stretched only a few hundred metres from the outbuildings of the cathedral, at most, and was usually surrounded by a fortified wall (Domburg).  They belonged to the secular domain or Hochstift of the bishop.

Worcester Cathedral: Worcester Cathedral, before the English Reformation known as Worcester Priory, is an Anglican cathedral in Worcester, England; situated on a bank overlooking the River Severn.  It is the seat of the Bishop of Worcester.  Its official name is the Cathedral Church of Christ and the Blessed Mary the Virgin of Worcester.  Built between 1084 and 1504, Worcester Cathedral represents every style of English architecture from Norman to Perpendicular Gothic.  It is famous for its Norman crypt and unique chapter house, its unusual Transitional Gothic bays, its fine woodwork and its "exquisite" central tower, which is of particularly fine proportions.

Cathedral Basilica of Christ the King (Hamilton): Cathedral Basilica of Christ the King is a Roman Catholic church in Hamilton, Ontario Canada.  The Cathedral was consecrated on December 19, 1933.  It is the seat of the Bishop of the Diocese of Hamilton, and the cathedral of the Diocese of Hamilton.  The cathedral contains the cathedra (bishop's chair) of bishop the most Rev. Douglas Crosby D.D. OMI.  The cathedral was raised to the status of a minor basilica on February 2013 by Pope Benedict XVI.

Wulfstan v Thomas (1070): Wulfstan v Thomas was an early court case in English law.  Bishop Wulstan latter Saint Wulfstan, was appealing to the new king against the taking of estates that had belonged to the Cathedral at Worcester.

Judicial vicar: In the Roman Catholic Church, a judicial vicar or episcopal official (Latin: officialis ) is an officer of the diocese who has ordinary power to judge cases in the diocesan ecclesiastical court.  Although the diocesan bishop can reserve certain cases to himself, the judicial vicar and the diocesan bishop are a single tribunal, which means that decisions of the judicial vicar cannot be appealed to the diocesan bishop but must instead be appealed to the appellate tribunal.  The judicial vicar (or "officialis" ) ought to be someone other than the vicar general, unless the smallness of the diocese or the limited number of cases suggest otherwise.  Other judges, who may be priests, deacons, religious brothers or sisters or nuns, or laypersons, and who must have knowledge of canon law and be Catholics in good standing, assist the judicial vicar either by deciding cases on a single judge basis or by forming with him a panel over which he or one of them presides.  A judicial vicar may also be assisted by adjutant judicial vicars (or "vice-officiales").  The judicial vicar is assisted by at least one, if not more, individuals with the title defender of the bond, they are normally priests, but do not have to be.  On staff will also be notaries and secretaries, who may be priests, religious brothers or sisters or nuns, or laypersons.

Æthelwig: Æthelwig (c. 1013–16 February in either 1077 or 1078) was an Abbot of Evesham before and during the Norman Conquest of England.  Born sometime around 1010 or 1015, he was elected abbot in 1058.  Known for his legal expertise, he administered estates for Ealdred, the Bishop of Worcester prior to his election as abbot.  After his election, he appears to have acted as Ealdred's deputy, and was considered as a possible successor when Ealdred was elected Archbishop of York.  Æthelwig worked during his abbacy to recover estates that had been lost to Evesham, as well as acquiring more estates.

Cubao Cathedral: Cubao Cathedral (formal title: Immaculate Conception Cathedral), is a Roman Catholic cathedral located in Quezon City, Metro Manila, the Philippines.  It is the see of the Roman Catholic Bishop of Cubao.  It was built in 1950 by the Society of the Divine Word and belonged to the order until 1990 when the Archdiocese of Manila took over its administration.  In 2003, it became the cathedral when the Diocese of Cubao was erected.  The present rector of the cathedral is Rev. Fr.  Ariston L. Sison, Jr., STL.

Wulfstan (died 1095): Wulfstan (c. 1008 – 20 January 1095) was Bishop of Worcester from 1062 to 1095.  He was the last surviving pre-Conquest bishop and the only English-born bishop after 1075.  Wulfstan is a Christian saint.

Wulfstan (died 1023): Wulfstan (sometimes Lupus; died 28 May 1023) was an English Bishop of London, Bishop of Worcester, and Archbishop of York.  He should not be confused with Wulfstan I, Archbishop of York, or Wulfstan, Bishop of Worcester.  He is thought to have begun his ecclesiastical career as a Benedictine monk.  He became the Bishop of London in 996.  In 1002 he was elected simultaneously to the diocese of Worcester and the archdiocese of York, holding both in plurality until 1016, when he relinquished Worcester; he remained archbishop of York until his death.  It was perhaps while he was at London that he first became well known as a writer of sermons, or homilies, on the topic of Antichrist.  In 1014, as archbishop, he wrote his most famous work, a homily which he titled the "Sermo Lupi ad Anglos", or the "Sermon of the Wolf to the English".

Supporting paragraphs: Wulfstan v Thomas (1070) Wulfstan (died 1095)
Answer: Wulfstan