Five generations later, John Booth of Killingholme (1556–1597) married Martha Butler circa 1573 and they had four offspring, of which their son George Booth (1582–1617) married in 1607 Elizabeth Monckton. Their son Captain William Booth (1608–1657) married at Market Rasen on 13 June 1631 Elizabeth Wright, daughter of John Wright. Captain Booth's marriage produced ten offspring, of whom their son Thomas Booth, born 1639 (who would become Sir Felix Booth's 2× great-grandfather), married at Market Rasen on 23 November 1670 Elizabeth Middlemore (died 1687), producing four sons and four daughters: their first son Revd John Booth (1672–1717) was Rector of Lusby (becoming Sir Felix Booth's 1× great-grandfather) marrying Elizabeth Sanderson on 20 June 1700 at Ulceby, their third son Captain Robert Booth (1677–1742) marrying Lady Susannah Clinton (1680–1754), only daughter of the 6th Earl of Lincoln and their fourth son Very Rev Dr Penyston Booth (1681–1765) marrying Katherine Jones, daughter of Revd Dr Edward Jones.