'Arthur C'larence Thomas was the Muggle stepfather of Dean Thomas. He married Dean's mother some time after she was abandoned by her first husband. They had three girls and a boy together and lived happily in London.
After Cedric Diggory was murdered by Lord Voldemort in 1995, Dean consciously avoided telling his parents about the event, presumably because he did not want them to pull him out of Hogwarts School of Witchcraft and Wizardry.
When Dean was forced to go into hiding during the Second Wizarding War, Clarence and his wife did not know where he had gone, and feared the worst, so Potterwatch broadcasted a request urging anyone with information on Dean to contact his family.
Clarence raised his three daughters, Rose, Lily, Jasmine, and his son, Oliver, to be extremely unprejudiced. His children are all-mixed race, and he knew this would make their lives even harder if they did not have easy-going attitudes. He is extraordinarily welcoming and kind.
Clarence is a masculine given name. It is of Latin origin, and the meaning of Clarence is "one who lives near the River Clare". The title "Duke of Clarence" was created for a 14th-century royal prince who married a girl from the Clare family. First used as a given name since the mid-19th century.
The name came into English language from the French variation of the late Latin name, Iacomus; a dialect variant of Iacobus, from the New Testament Greek Ἰάκωβος (Iákōbos), from Hebrew word יעקב (Yaʻaqov). Diminutives include: Jim, Jimmy, Jimmie, Jamie, Jimbo, Jamey, and others. It may be abbreviated to "Jay".
Thomas is a common surname used in English, French, German, Dutch, Danish, and southern India (Nasrani). It derives from the medieval personal name, of Biblical origin, from Aramaic t’om’a, a byname meaning ‘twin’. It was borne by one of the disciples of Christ, best known for his scepticism about Christ's resurrection(John 20:24–29). The th- spelling is organic, the initial letter of the name in the Greek New Testament being atheta. The English pronunciation as t rather than th- is the result of French influence from an early date. In Britain the surname is widely distributed throughout the country, but especially common in Wales andCornwall. Thomas is the ninth most common surname in the United Kingdom.