It looks like the death daye was not marked "after this date". I have seen a few places where the deaths of both parents are simply "After 1601", because they were descendants of their son, Isaac, who was born in that year. However, I think you could safely ammend that to "After 1609". I'm sure they will be delighted to have lived long enough to see their daughter born.... much less create her!
This is consistent with what I saw on multiple sites:
Notes for Jean Vermilyea:
Was a Wallon refugee to London from Holland. (French speaking Protestant)
Jean was a descendent of the martyr Count Stephen Vermilye (born about 1467 in
Perugia, Florence, Italy.
Among the first Walloon families who were "the first to flee their country were those of De FOREST and VERMEILLE or VERMILYE, the latter, in the troubles of the sixteenth century, taking refuge in England."
James Riker, REVISED HISTORY OF HARLEM (1904), p.48.
Jean and Marie (ROUBLET) VERMIELLE fled to England in the latter part of the 16th century, and had several children born at London. Among these was Isaac VERMILYE, born 1601. He married Jacomina JACOBS.
Rebecca VERMEILLE, daughter of Jean and Marie (ROUBLEY) VERMIELLE, was born in London, England, in 1609.
James Riker, REVISED HISTORY OF HARLEM (1904), p.104.
Child of Jean Vermilyea and Marie Roubley is:
Isaac Vermilyea, born 1601 in Leiden, Netherlands; died Abt. 1675 in New Harlem, NY; married Jacomina Jacobs 1627 in Netherlands.