- Source: Henry de Ponthieu
- Henry III dari Inggris
- John dari Gaunt
- Daftar Comte Boulogne
- Baudouin V dari Flandria
- Béthencourt-sur-Somme
- Pendamping Raja dan Ratu Inggris
- Edward II dari Inggris
- Mary MacDuff
- Isabella MacDuff
- Yolande dari Dreux (1263-1322)
- Henry de Ponthieu
- John de Ponthieu
- William III, Count of Ponthieu
- Joan, Countess of Ponthieu
- Count of Ponthieu
- William IV, Count of Ponthieu
- Adela of Ponthieu, Countess of Surrey
- Guy I, Count of Ponthieu
- Aylmer Bourke Lambert
- Sykes family of Sledmere
Henry de Ponthieu (14 February 1731 – 10 December 1808) was a London merchant of Huguenot ancestry who collected fish and plant specimens from the West Indies for botanist Joseph Banks. The orchid genus Ponthieva was named by botanist Robert Brown in his honour.