The lovely thing about Wertherson being the son of Werther, being an F-line stallion, this family tree is famous for its versatility, depending on the MARE you put to the horse. Ferdinand was the most famous for producing Jumpers - he was so famous for his courage, confidence, and jumping ability, all of which he was extremely consistent for passing on to his kids. His most influential son, Wendekreis, should have been a jumper and indeed he, himself, was… however, he produced both dressage and jumping kids, both equally talented and successful in both GP arenas. When the 1/2 TB mare, Meisterkrone was paired up to produce Werther, Werther himself had a very strong dressage bloodline from his mother through her TB father’s influence. Werther had a very powerful jumping bloodline on the top. What made Werther so spectacularly popular was his propensity for either DRESSAGE or JUMPING strongly depended on the MARE to whom he was paired with.
So, OP, your mare (is it a mare?) descends from a very powerful DRESSAGE lineage, paired to a mareline who had the abilities of both because of the nature of her personal sireline, Werther.
Where it gets even a little more interesting is to analyze Weltmeyer’s father, who is World Cup I - he was a show jumper and tended to produce show jumpers. Then this little mare called Anka who descended from the dressage Trakhener stallion Absatz was paired up with him and produced the phenom known the world over as Weltmeyer.
Your horse has a pedigree that could take him anywhere. If it’s a mare (you didn’t say), and she was of good breeding quality - you could pair her with any of the dressage lines following the W, A and D lines, or go back into jumper territory with F and E - epecifically Eiger I descendants. The A line was also split to incorporate an E-line, with two main groups. One group goes back to the stallion Eindruck II. whose best known son is Einblick in his time a performance test winner and very good in dressage and jumping. Einblick was used at stud since 1973. This group is considered mainly to be dressage horses, although Einblick, himself, was also very good in jumping.
The second E-line goes back to the stallion Eisenherz used in breeding since 1972. This group has a bigger influence on the breed than the Eindruck group. The best son of Eisenherz is Eiger 1 who is a very good type and very prepotent. His offspring have both dressage and jumping abilities, and his best son, I believe, is the stallion Espri, used since 1985. Espri’s kids are very convincing, especially his sons Escudo I and Escudo II, among many others. Escudo II convincingly produces both dressage and show jumping horses, depending on the MARE he is put to. Espri, even further to make it more interesting, descends directly from the great Dressage stallion State Premium-Mare Maker, Diplomat. This is why you might breed your mare to an E jumper stallion who descends via Espri and Diplomat and still end up with a rather impressive dressage horse or a horse that is highly versatile and could easily do either/or quite wonderfully and with high regard.
Your horse has rather the VERY interesting and colorful pedigree. Lots could go from there.
G-line has been split into 2 categories - G-line for jumping and G-line for dressage. Guarantor, himself, descends from the Dressage lineage, because his mareline is A… via Absatz.
Interesting little factoid about Grande (Guarantor’s grandsire) - - he had the highest number of grandkids participating in the 1996, 2000 and 2004 Olympics and the highest medalling horses in both Show Jumping AND Dressage of any other breeding stallion in the world. Grande’s lineage is one of the most successful lineages in the world.
Therefore, putting Grande together with Werther and Weltmeyer pretty much makes for potential world domination. If you’re so inclined!
A particularly interesting outcross could take you into the C-line for jumping as it would tie into the Cardinal also found in your horse’s pedigree. Like I said, an extremely interesting pedigree.