Well she personally identifies as Summer, so that's probably what this page should reflect. Summer Willamy is an option, although it's not apparent that she uses those names together. Otherwise, Summer (Wonderland) is another option.
Talk about it here.
Summer, born Jessica Willamy, was a poet and a member of the 1960s counterculture movement. Back home in Dallas, she was referred to as "Jess" or "Jessica", however she took on the name "Summer" when joining the counterculture movement.
In 1967, her boyfriend Denny Glass went missing in San Francisco just prior to the Human Be-In concert. She feared that he had somehow gotten mixed up with Blue Moonbeams, a then-new and dangerous version of LSD. Ben, Polly and the Second Doctor became involved in Jess' search for Denny.
She discovered he had been recruited by the Combine, who were spreading Blue Moonbeams as they saw the Summer of Love and counterculture movement as a threat. The source of the drug, a Colour-Beast the Combine had captured, was freed by the Doctor, Ben and Polly. Denny warned Summer to leave San Francisco and hide to avoid the Combine's wrath.
Subsequently, she spent the rest of her life on the move, trying to evade the Combine. Over thirty years later, it seemed apparent that they had finally decided to eliminate her. Before she could be killed, the Fourth Doctor arrived and took her away in his TARDIS. (PROSE: Wonderland)