family's status, the neighbourhood in which Lee grew up became overcrowded, dangerous, and full of gang rivalries due to an influx of refugees fleeing communist China for Hong Kong, at that time a British Crown Colony. Grace Ho is reported as either the adopted or biological daughter of Ho Kom-tong (Ho Gumtong, ) and the half-niece of Sir Robert Ho-tung, both notable Hong Kong businessmen and philanthropists. Bruce was the fourth of five children: Phoebe Lee (), Agnes Lee (), Peter Lee, and Robert Lee. Grace's parentage remains unclear. Linda Lee, in her 1989 biography The Bruce Lee Story, suggests that Grace had a German father and was a Catholic. Bruce Thomas, in his influential 1994 biography Bruce Lee: Fighting Spirit, suggests that Grace had a Chinese mother and a German father. Lee's relative Eric Peter Ho, in his 2010 book Tracing My Children's Lineage, suggests that Grace was born in Shanghai to a Eurasian woman named Cheung King-sin. Eric Peter Ho said that Grace Lee was the daughter of a mixed race Shanghainese woman and her father was Ho Kom Tong. Grace Lee said her mother was English and her father was Chinese. Fredda Dudley Balling said Grace Lee was three-quarters Chinese and one-quarter British. In the 2018 biography Bruce Lee: A Life, Matthew Polly identifies Lee's maternal grandfather as Ho Kom-tong, who had often been reported as his adoptive grandfather. Ho Kom-tong's father, Charles Maurice Bosman, was a Dutch Jewish businessman from Rotterdam. He moved to Hong Kong with the Dutch East India Company and served as the Dutch consul to Hong Kong at one time. He had a Chinese concubine named Sze Tai with whom he had six children, including Ho Kom Tong. Bosman subsequently abandoned his family and immigrated to California. Ho Kom Tong became a wealthy businessman with a wife, 13 concubines, and a British mistress who gave birth to Grace Ho. His younger brother Robert Lee Jun-fai is a notable musician and singer, his group The Thunderbirds were famous in Hong Kong. A few singles were sung mostly or all in English. Also released was Lee singing a duet with Irene Ryder. Lee Jun-fai lived with Lee in Los Angeles in the United States and stayed. After Lee's death, Lee Jun-fai released an album and the single by the same name dedicated to Lee called The Ballad of Bruce Lee. While studying at the