Monarchs of Portugal
Below are all of the monarchs of Portugal, including the years of their reign, beginning with the House of Burgundy. What is shown is the relationship between those monarchs and me based on who has so far been identified as the closest male ancestor. Since there are multiple lines of descendants from the earlier monarchs, there remain unexplored lines which might, if developed, result in closer relationships to the later monarchs. Of these monarchs, the most recent ancestor is Alphonso I.
| Monarch, Years of Reign | Relationship* | Nearest Common Male Ancestor | Relationship* |
| House of Burgundy | |||
| Alphonso I, the Conqueror, 1139-1185 | 28th Great Grandfather | Henry, Count of Portugal and Burgundy | 29th Great Grandfather |
| Sancho I, the Populator, 1185-1211 | 26th Great Grand Uncle | Alphonso I, the Conqueror, 1139-1185 | 28th Great Grandfather |
| Alphonso II, the Fat, 1211-1223 | 1st Cousin, 27x removed | Alphonso I, the Conqueror, 1139-1185 | 28th Great Grandfather |
| Sancho II, the Pious, 1223-1247 | 2nd Cousin, 26x removed | Alphonso I, the Conqueror, 1139-1185 | 28th Great Grandfather |
| Alphonso III, the Brave, 1247-1279 | 1st Cousin, 26x removed | Alphonso VIII, King of Castile | 27th Great Grandfather |
| Denis, the Farmer King, 1279-1325 | 2nd Cousin, 25x removed | Alphonso VIII, King of Castile | 27th Great Grandfather |
| Alphonso IV, the Brave, 1325-1357 | 2nd Cousin, 23x removed | James I, King of Aragon | 24th Great Grandfather |
| Peter I, the Just, 1357-1367 | 3rd Cousin, 22x removed | James I, King of Aragon | 24th Great Grandfather |
| Ferdinand I, the Handsome, 1367-1383 | 4th Cousin, 21x removed | James I, King of Aragon | 24th Great Grandfather |
| Beatrice, 1383-1385 | 5th Cousin, 20x removed | James I, King of Aragon | 24th Great Grandfather |
| HOUSE OF AVIZ | |||
| John I, the Good, 1385-1433 | 4th Cousin, 21x removed | James I King of Aragon | 24th Great Grandfather |
| Edward, the Philosopher, 1433-1438 | 1st Cousin, 17x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| Alphonso V, 1438-1477 | 2nd Cousin, 16x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| John II, the Perfect Prince, 1477-1495 | 3rd Cousin, 15x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| House of Aviz-Beja | |||
| Manuel I, the Fortunate, 1395-1521 | 3rd Cousin, 15x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| John III, the Pious, 1521-1557 | 4th Cousin, 14x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| Sebastian I, the Desired, 1557-1578 | 6th Cousin, 12x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| Cardinal Henry, the Chaste, 1578-1580 | 4th Cousin, 14x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| Anthony, the Determined, 1580-1581 | 5th Cousin, 13x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| HOUSE OF HABSBURG | |||
| Philip I, the Prudent, 1581-1598 | 5th Cousin, 13x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| Philip II, the Cruel, 1598-1621 | 6th Cousin, 12x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| Philip III, the Oppressor, 1621-1640 | 7th Cousin, 11x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| House of Braganza | |||
| John IV, the Restoring King, 1640-1656 | 7th Cousin, 11x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| Alphonso VI, the Victorious, 1656-1667 | 8th Cousin, 10x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| Peter II, the Pacific, 1667-1706 | 8th Cousin, 10x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| John V, the Magnanimous, 1706-1750 | 9th Cousin, 9x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| Joseph I, the Reformer, 1750-1777 | 10th Cousin, 8x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| Maria I, the Mad, 1777-1816 | 11th Cousin, 7x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| John VI, the Clement, 1816-1826 | 12th Cousin, 6x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| Peter IV, the Soldier-King, 1826 | 13th Cousin, 7x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| Maria II, the Educator, 1826-1828 | 14th Cousin, 4x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| Miguel, the Traditionalist, 1828-1834 | 13th Cousin, 7x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| Maria II, the Educator, 1826-1828 | 14th Cousin, 4x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| House of Braganza-Wettin | |||
| Pedro V, the Hopeful, 1853-1861 | 15th Cousin, 3x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| Louis I, the Popular, 1861-1889 | 15th Cousin, 3x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| Carlos I, the Martyred, 1889-1908 | 16th Cousin, 2x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |
| Manuel II, the Patriot, 1908-1910 | 17th Cousin, 1x removed | John of Gaunt, First Duke of Lancaster | 17th Great Grandfather |