enshrine (someone or something) in (one's) heart
To retain fondly, as of a memory. While I'm heartbroken that Grandma is gone, at least I've enshrined all of my wonderful memories with her in my heart.
enshrine someone in one's heart
and enshrine someone's memory in one's heartFig. to keep the memory of someone in a special place in one's heart or mind. Bob enshrined Jill's memory in his heart.