Phonetic transliteration of a foreign surname.
格雷 (Géléi) is the standard Mandarin rendering of 'Grey/Gray' (used e.g. for
格雷夫人 Mrs. Grey,
格雷伯爵 Earl Grey);
毕斯 (bìsī) gives a hard '-bis/-beas' ending. The full name typically appears in translated novels rather than as a public figure.