Hi and welcome from me too

The marriages for John and Robert are also on the free Lancsopc website.
I have found three baptisms on there and I think they could possibly be the children of Robert and Nancy.
13 Jan 1799 St Mary the Virgin, Bury, Lancashire, England
Robert Howard - Son of Robert Howard & Nancy
Born: 10 Dec 1798
Abode: Bury
5 Jul 1801 St Mary the Virgin, Bury, Lancashire, England
George Howard - Son of Robert Howard & Nancy
Born: 2 Jun 1801
Abode: Bury
2 Oct 1803 St Mary the Virgin, Bury, Lancashire, England
William Howard - Son of Robert Howard & Nancy
Born: 24 Aug 1803
Abode: Tott.
http://www.lan-opc.org.uk/Search/indexp.html