Here's a breakdown of Mike Todd's marriages:
* First Marriage: Mike Todd was married to Sylvia Leonard from 1944 to 1946.
* Second Marriage: Mike Todd was married to Joan Blondell from 1946 to 1951.
* Third Marriage: Mike Todd was married to Elizabeth Taylor from 1957 until his death in 1958.
So, while he was married to both Joan Blondell and Elizabeth Taylor, he did not marry them at the same time.