Avice Marmion

Avice Marmion (c. 1309 – after 1379) was a daughter of John Marmion, Baron Marmion of Winteringham, who died in 1335, by Maud de Furnival. She became the second wife of John de Grey, 1st Baron Grey of Rotherfield, a founding Knight of the Garter who died in 1359.

Both her sons took the Marmion name: John Grey, called Marmion, died without issue in 1385, and Sir Robert Marmion married Lora St Quintin, whose daughter Elizabeth married Henry FitzHugh. Avice was still living in March 1379.