1879 - 1928 (48 years)
| Bruce Borthwick, < | |
| B: | 2 May 1938 |
| Port Jefferson, Brookhaven, Suffolk, NY | |
| D: | 16 Nov 2002 |
| Albion, Calhoun, MI | |
| Alan Borthwick, < | |
| B: | 21 Oct 1940 |
| Port Jefferson, N. Y | |
| D: | 3 Jul 2017 |
| John Philip Morgan | |
| B: | 24 May 1923 |
| Lawrence, Essex, Massachusetts, United States | |
| D: | 13 Nov 2011 |
| Brooklyn, New York City, New York, United States | |
| Rev George Borthwick, ^ | |
| B: | 6 Dec 1911 |
| Bangalore, South India | |
| D: | 5 Dec 2004 |
| Troy, Rennselaer, NY | |
| Mildred Helen Maynard, ^ | |
| B: | 2 Aug 1910 |
| Monmouth, Warren County, Illinois, United States of America | |
| M: | 12 Jun 1936 |
| Warren, Illinois, United States | |
| D: | 17 May 1995 |
| Troy, Rensselaer County, New York, United States of America | |
| William Borthwick, ^ | |
| B: | 17 Oct 1913 |
| D: | 15 Aug 1976 |
| Mexico | |
| Betty Bernhard | |
| B: | 10 Mar 1921 |
| M: | Abt Jun 1944 |
| Anniston, AL | |
| D: | 18 Oct 2004 |
| John Theodore Borthwick | |
| B: | 15 Apr 1918 |
| Medicine Hat JAlberta, Canada | |
| D: | MAYBE 2004 |
| Ann Borthwick() | |
| B: | Abt 1918 |
| M: | Jul 1945 |
| Dartford, Kent, England, United Kingdom | |
| D: | Yes, date unknown |
| Edward Maynard Borthwick | |
| B: | 2 May 1922 |
| Wickenburg, Maricopa, Arizona, United States | |
| D: | 28 Oct 1971 |
| New York, New York, NY | |
| Elizabeth Busch, > | |
| B: | 9 Sep 1879 |
| Dresden, Dresden, Sachsen, Germany | |
| D: | 11 Mar 1928 |
| Udagamandalām, Madras, India | |
| William Borthwick, > | |
| B: | 25 Aug 1883 |
| Leith, Edinburgh, Scotland, United Kingdom | |
| D: | 30 Oct 1974 |
| Tirupattur, North Arcot, South India | |
