John Napier of Kilmahew, Walton and Wallaceton was born circa 1620 in Scotland to Robert Napier (-1659) and Katherine Haldane and died before 6 July 1689 Scotland of unspecified causes. He married Lilias Colquhoun (c1630-) 1649 in Scotland.
"John Napier had a resignation of Kilmahew from his father, in 1649, on his marriage with Lillias, daughter of Sir John Colquhoun of Luss. In 1653, he acquired Walton and Wallaceton from his father-in-law, the Laird of Luss. He was one of the representatives for the county of Dunbarton in Parliament, in 1661-5-9. His covenanting principles seem to have brought him under the surveillance of the Episcopalian party, and in 1685, he was apprehended with his lady, and fined in the sum of 2,000 lib. Having no male issue, he executed, but, it is affirmed, failed to record and entail of his lands, 6th July, 1689, which called successively the heirs male of the bodies of his two daughters -- Margaret and Katherine -- and the heirs of the bodies of such heirs male; whom failing, the heirs female of his daughters. Margaret carried on the line of the family, and Katherine married Robert Campbell of Netherwoodside."
-The History of Dumbartonshire, Civil, Ecclesiastical, and Territorial: With Genealogical Notices of the Principal Families in the County: the Whole Based on Authentic Records, Public and Private by Joseph Irving
Children
| Name | Birth | Death | Joined with |
| Margaret Napier (-1694) | |||
| Catherine Napier (c1650-) | 1650 Scotland | Scotland | Robert Campbell (c1645-1712) |
Siblings
| Name | Birth | Death | Joined with |
| John Napier (c1620-c1689) | 1620 Scotland | 6 July 1689 Scotland | Lilias Colquhoun (c1630-) |
| James Napier (-1669) | |||
| Robert Napier (-aft1669) | |||
| Anne Napier | |||