Meredith Quill

Meredith Quill is a supporting character in the Marvel Cinematic Universe, debuting in Guardians of the Galaxy. With the Celestial Ego, Mereith raised their son Peter on Earth. However, after her death Meredith's son was abducted and eventually adopted by Yondu Udonta.

Pre-Series
One day, Meredith falls in love with the Celestial, Ego and they begin a relationship. While Meredith Quill was in early pregnancy with Peter, Ego and Meredith drive down a road while Meredith sings to "Brandy (You're A Fine Girl)". Ego showsMeredith a plant he had implanted in the soil, and says it will one day "be across the universe". Not knowing what he's talking about, Meredith says she likes the way he said it. Ego tells her that no matter what, his heart will always be hers. Meredith, smiling, tells Ego that she's lucky that she fell in love with a spaceman and the couple kisses. unknown to Meredith, the plant within the earth begins to grow.

Post- death
Just as Peter holds onto the Power Infinity Stone, he begins to see a hallucination of his mom begging Peter to take her hand. However, this is really Gamora shouting at Peter to take her hand.

As an adult, Quill learns from Ego, that he was the one who planted the tumor in her brain causing her head cancer. Peter shot his father multiple times for killing his mother.

Four years later, Gamora makes Quill swear on his mother that he will kill her if the time comes.