Cornelis Baas (alias: Keesie Maat) was born 7 May 1735 in Broekoord, Andijk, North Holland, Netherlands to Adrianus Adrianusz (1693-) and Lijsbeth Pieters (-) and died 17 September 1822 Wervershoof, North Holland, Netherlands of unspecified causes. He married Trijntje Bakker (1739-) 4 February 1759 in Wervershoof, North Holland, Netherlands.
Children
| Name | Birth | Death | Joined with |
| Teetje Baas (1759-1817) | |||
| Heribertus Cornelisz (1761-) | |||
| Catharina Baas (1764-1818) | 11 September 1764 Wervershoof | 25 August 1818 Bovenkarspel | Aris Spek (1761-1841) |
| Jan Baas (1766-1819) | |||
| Lijsbeth Baas (1768-) | |||
| Arie Baas (1769-1769) | |||
| Arie Baas (1770-) | |||
| Pieter Baas (1773-) | |||
| Dieuwertje Baas (1776-) | |||
| Anna Baas (1777-) | |||
| Agatha Baas (1782-) | |||
Sources