And lots of them!
1) Lady Mary (b. 10 Nov 1421)
2) Lady Blanche (b. 31 Aug 1423)
3) Lady Catherine (b. 8 Sept 1424)
4) Lady Isabelle (b. 20 Oct 1425, posthumously)
So, the POD for this WI is that Henry V consummates his marriage with Catherine of Valois slightly earlier than OTL, resulting in...