Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Name | Tenure | Courtesy title | Court Rank | Revenues | Lineage |
| --- | --- | --- | --- | --- | --- |
| Ōoka Tadasuke (大岡忠相) | 1748–1751 | Echizen-no-kami (越前守) | Lower 5th (従五位下) | 10,000 koku | 4th son of hatamoto Ōoka Tadataka |
| Ōoka Tadayoshi (大岡忠宜) | 1755–1766 | Echizen-no-kami (越前守) | Lower 5th (従五位下) | 10,000 koku | 2nd son of Tadasuke |
| Ōoka Tadatsune (大岡忠恒) | 1766–1784 | Echizen-no-kami (越前守) | Lower 5th (従五位下) | 10,000 koku | 2nd son of Tadayoshi |
| Ōoka Tadatomo (大岡忠與) | 1784–1786 | Echizen-no-kami (越前守) | Lower 5th (従五位下) | 13,000 koku | 3rd son of Ogasawara Nagamichi |
| Ōoka Tadayori (大岡忠移) | 1786–1828 | Echizen-no-kami (越前守) | Lower 5th (従五位下) | 10,000 koku | 3rd son of Tadatsune |
| Ōoka Tadayoshi (2nd) (大岡忠愛) | 1828–1857 | Echizen-no-kami (越前守) | Lower 5th (従五位下) | 10,000 koku | son of Tadayori |
| Ōoka Tadataka (大岡忠敬) | 1857–1871 | Echizen-no-kami (越前守) | Lower 5th (従五位下) | 10,000 koku | 5th son of Tadayori |
Question:
What's the tenure of 3rd son of tadatsune?
Answer:
1786–1828