From Wikipedia:
"Geoffrey and Matilda's marriage took place in 1128. The marriage was meant to seal a lasting peace between England, Normandy (an English possession since William I) and Anjou. She was eleven years older than Geoffrey, and very proud of her status as dowager Empress (as opposed to being a mere countess), and which she kept for the remainder of her life. Their marriage was a stormy but happy one with frequent long separations; she bore him three sons and survived him by over 15 years."
[S013457] Compiled by Alfred Rudulph Justice, Ancestry of Jeremy Clarke of Rhode Islnad and Dungan Genealogy, (Philadelphia: Franklin Publishing Co., 1922), 34.