The St. John Genealogy Project
Origin and Ancestry DNA Database & Electronic Archive
| Taken by | Private | |
| Test date | 10 Mar 2018 | |
| Vendor | FTDNA | |
| Test Type | Y-DNA | |
| Number/Name | N3743 | |
| Test Group | Descendants of de Port-St. John; Scandinavian | |
| Most distant ancestor | ||
| Most recent common ancestor | ||
| Number of STR Markers | 111 | |
| Marker values | 13,23,14,9,14-14,11,14,11,12,11,29,15,8-9,8,11,23,16,20,29,12-14-15-16,10,10,19-21,14,13,15,22,35-38,12,10,11,8,15-15,8,11,10,8,9,10,12,23-25,15,10,12,12,14,8,12,25,19,12,13,11,12,11,11,12,11,29,12,8,17,12,25,27,19,11,12,12,13,11,9,11,11,10,12,13,31,11,12,21,16,11,10,27,15,18,11,24,17,13,15,25,12,21,18,12,14,18,9,12,11 | |
| Y-DNA Haplogroup | I-M253 | |
| Ancestral surnames | de Port-St. John | |
| Linked to | Private Arthur D de Port-St. John, b. 6 May 1900, Milwaukee, Wisconsin, USA  William de Port-St. John, b. abt. 1850, Wisconsin, USA | |
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