I've done some more digging into the background of Hugh Ward and Ann Freeman and I think I may have found a christening for Hugh and two possible candidates for Ann.
It looks like Hugh was christened in St Botolph without Aldgate on 10 December 1609 and was the son of John Ward. Alternatively there is a "Hewgh Ward" christened in the parish of St Katherine by the Tower in 1608.
As for Ann Freeman I have found these two possible candidates:
Ann Freeman - christened 14 December 1606 in All Hallows the Less, London - daughter of William
Ann Freeman - christened 14 March 1615 in St Botolph Bishopsgate, London - daughter of William
Both are these parishes are 1 mile from the parish of St Andrew, Holborn so either is a possibility.
The first Ann would be about 37 when she married Hugh. Also the last child born to Edward Watson and Ann was Isaac Watson who was christened in 1647 in Faversham meaning this Ann would be about 41 when Isaac was born.
The other Ann would be about 17 when she married Hugh and about 32 when Isaac was born.
Annoyingly I can't find a way to confirm which might be the right Ann. There is a burial in All Hallows the Less dated 3 March 1609 for an "Ann Freeman" which might be the first Ann, but there's no indication if this Ann was an adult or a child.
Matt