In memory of somebody
Definition 1 of 1
Pro Tip 1/3Tone of Respect
Used to express deep respect or reverence, often in a solemn or formal tone. 
A plaque was installed in memory of the beloved principal.
Pro Tip 2/3Commemorative Events
Often used for events, like ceremonies or anniversaries, to honour someone's legacy or sacrifices. 
They held a candlelight vigil in memory of the victims.
Pro Tip 3/3Permanent Memorials
Associated with physical objects or places intended to last and serve as a lasting tribute. 
The garden was planted in memory of her grandmother.