How old were Shakespeare's children when they died?

Answer 1

His older daughter Susanna was born in 1583 and died in 1649 (age 66). She had one daughter, Elizabeth.

His daughter Judith was born in 1585 and died in 1662 (age 77). She had three children.

His son Hamnet (Judith's twin) was born in 1585 and died in 1596. (age 11)

Because none of Shakespeare's grandchildren had children, his lineage ceased with the death of granddaughter Elizabeth in 1670.

Answer 2

Hamnet (he named his character Hamlet after this boy)