John Ystumllyn

John Ystumllyn (–1786), also colloquially known as Jac Du or Jack Black, was an 18th-century gardener and the first well-recorded person of African descent in North Wales.

John was of uncertain origin, possibly a victim of the Atlantic slave trade, and from either West Africa or the West Indies. As a child, he was taken by the Wynn family to its Ystumllyn estate in Criccieth, where he was christened with the name John Ystumllyn. Here he was taught English and Welsh by the locals. He learned horticulture and craftsmanship, at which he had some natural skill, in the estate garden. He worked as a gardener at the estate and eventually "grew into a handsome and vigorous young man", his portrait painted at around this time. Doted upon by several local girls, he began a romance with a local maid, Margaret Gruffydd.

As Margaret moved to different employments Ystumllyn followed her, eventually running away from his job as gardener to marry in 1768. They had seven children, five of whom survived, with several of their descendants still living in the area . They initially worked as land stewards, but Ystumllyn eventually re-entered into the employment of the Wynn family. In recognition of his service, Ellis Wynn gave Ystumllyn a large garden and cottage at Y Nhyra Isa. Ystumllyn died in 1786; his wife, Margaret, outlived him by more than forty years.

Ystumllyn was well-liked in his lifetime and met with little racial prejudice, though locals often expressed surprise at his unfamiliar appearance. Several years after his death, a small monument was constructed in his place of burial St Cynhaearn's Church. Over a hundred years after Ystumllyn's death, the Welsh writer Robert Isaac Jones published an account of Ystumllyn's life compiled from various local oral records. This work, while also criticised for its "forgetfulness" and "racial stereotyping", serves as "the most informative" extant source of Ystumllyn's life. According to Jones, Ystumllyn was "a very honest man, with no malice, and was respected by the gentry and the common people alike".