This is a bit unusual

Matilda/Maude de Singleton circa 1158 Little Singleton, Kirkham, Lancashire, England Death: 1219 (61)
daughter Margaret born 1230 Over Kellet, Bolton-Le-Sands, Lancashire, England Death: 1285 (55) Lancashire, upholland, England

She was 127 years old when she gave birth to Margaret.

I calculated a 1200 dob for Margaret, an 1175 birth for her father and 1150 for her grandfather

Adam de Kellet is then 1190, his father 1160
Case solved.