John UNDERHILL married Anne PADDY in May 1728. They had two children including Susannah in 1729. Anne died in 1731, most likely as a result of the birth of their son, John, who was baptized on the same day that Anne was buried in Coleshill.
John married Catherine BROWN in July 1733 and went on to have 4 further children.
It is thought that there were two John UNDERHILLs baptizing children in Coleshill at that time: John UNDERHILL who married Anne PADDY and then Catherine BROWN, and John UNDERHILL of Bacons End.
Evidence to support this includes:
1. Parish baptism records are inconsistent. Sarah (May 1736) and Joseph (Apr 1741) were baptized by John UNDERHILL of Bacon's End. John (Dec 1734), Thomas (Oct 1736) and Mary (Oct 1739) were baptized by John UNDERHILL and his wife Catherine. Elizabeth (Dec 1741) was baptized by just John UNDERHILL (Catherine was buried on 21 Jan 1741 (1742 CE) so was likely too ill to attend.)
2. Sarah and Thomas were baptized 5 months apart in 1736 and Joseph and Elizabeth 8 months apart in 1741.
3. John UNDERHILL of Bacons End was buried on 27 May 1744, and John UNDERHILL, aged 96 (born 1691/92), was buried on 19 Sep 1788.
On this basis, it is believed that Susannah UNDERHILL's father was the John UNDERHILL was born in 1691/92, married Susannah's mother Anne PADDY in 1728 and then Catherine BROWN in 1733. He had a total of 6 children and died aged 96 in 1788.
There is a marriage allegation and bond made by a John Underhill of Coleshill, yeoman, that there be no "Lawful Lett or Impediment" to him marrying Catherine MADLEY of the same parish, signed on 2 February 1720. The marriage was to take place at Bickenhall or Coleshill. There is no record of the actual marriage taking place. This may have been John UNDERHILL of Bacons End's marriage or an earlier marriage for Susannah's father.