Sylvia DeWitt was an Earth woman who fell in love with a Kryptonian survivor from Kandor, Van-Zee. The two were married and Sylvia relocated to the bottled city. They had two children together, Lili Van-Zee and Lyle-Zee.
- This version of Sylvia DeWitt, including all history and corresponding appearances, was erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths limited series. Even though versions of the character may have since appeared, this information does not apply to those versions.
- Following Kryptonian custom, Sylvia DeWitt dropped her surname after marriage and became known simply as Sylvia.
- Sylvia DeWitt bears a close resemblance to Lois Lane.
- 15 Appearances of Sylvia DeWitt (Earth-One)
- 1 Images featuring Sylvia DeWitt (Earth-One)
- Quotations by or about Sylvia DeWitt (Earth-One)
- Character Gallery: Sylvia DeWitt (Earth-One)