Who was Simon Leete, Catherien's 1st husband, according to My Heritage tree?
Simon or Symeon Leete of Eversden, Cambridgeshire, born 1573 is on several online trees.
Anc. FT has him alive 1573-1666 and married to Sophie, Queen of Denmark of Mecklenburg-gastrow (1557-1631)

One on another website has his dates 1573-1655, son of Robert Leete & Alice Grundy (1523-1598). Source Anc. tree.
Family Search Simeon Leete 1573-1655, b. & d. Eversden, Cambridgeshire, parents Robert Leete & Alice Grundy (1545-1597).Married 1600 Eversden to Julia Downs (1573-1597)
WikiTree Simeon Grundy "Symeon" Leete 1573-1655. Son of Robert Leete. Married Agnes Pasley at Histon, Cambs. 1610. "May have had another wife." Source: The Eversden Branch of the family of Leete, printed 1906. There's a link to the source on Internet Archive. The printed tree on the source has no wife named for Simeon. It says he was a churchwarden.
There's information about Robert Leete, Simon's father on jeanie's genealogy. According to this, Robert was a university- educated man and land-holder.