The sire of Suarez d'O is Tangelo van de Zuuthoeve, a stallion with a great lift-off, wellrounded jumps and excellent leg technique, a surplus in power and carefulness.
The pedigree of Tangelo van de Zuuthoeve is an accumulation of the best European show jumping horse sires. All stallions in the first four removes of Tangelo's dam's line have performed at international level in show jumping. Inevitably Tangelo made his breakthrough at international level in 2004 and had remarkable achievements under Roelof Bril (1m60). Tangelo's sire Narcos II (Fair Play III) is amongst the best sires in French breeding. Also dam's sire Laudanum xx is one of the foremost show jumping horse progenitors in the world.
The dam of Suarez is Ecorada-S, who is also the dam of Suarez' full sister Quantana d'O and Pinacola d'O (Quantum).
Suarez' second dam is Barfleure-S, the mother of:
| Tangelo van de Zuuthoeve | Narcos II | Fair Play III |
| Gemini | ||
| Olympia van de Krekebeke | Laudanum XX | |
| Racyona Z | ||
| Ecorada-S | Acorado | Acord II |
| Doreen XIII | ||
| Barfleure-S | Poor Boy | |
| Ulla-S |
