Three people who claim to be descendants of the Jimenez Dynasty have tested I1-L22 on the royalty project of family tree dna. The dynasty's last ruler Sancho VII, king of Navarre, died in 1234. It is not clear to me of there is paper trail evidence for the claim.
That is not true, these gentlemen are not direct descendants of the Jimena dynasty
+ Genetic characterization of the House of Aragon-Begoña Martínez Jarreta- University of Zaragoza- Genetic study of the remains of the Kings of Aragon prior to the constitution of the Crown of Aragon in 1137: Ramiro I (1035-1063), Sancho Ramírez (1063-1094), Pedro I (1094-1104), Alfonso I (1104-1134) and Ramiro II (1134-1137) -The results revealed that their Y chromosome belongs to HapY-R1b-M269 (No subclades analyzed). Mit-H (6) and U (1)
The ancestors of Alfonso I- Jimena Dynasty
* Jimeno de Pamplona "El Fuerte" (745-805 AD)
* Eneko Jimeno (785-848 AD)
* García Jiménez (835-890 AD) -Married with Oneca Rebelle de Sangüesa and in 2nd nuptials with Dadildis de Pallars
*Sancho Garcés I (Sangüesa, Navarra, 865 AD- Resa, Navarra 925 AD). King of Pamplona 905-925 AD- Married Toda Aznárez-Reconquered Rioja.
*García Sánchez I (919-970 AD) -King of Nájera and Pamplona (925-970 AD)-Battle of Simancas -Married with Andregoto Galindez, daughter of the Count of Aragón Galindo Aznárez II
* Sancho Garcés II "Abarca" (938-994 AD) -King of Nájera, Pamplona, Count of Aragón-First who is called King of Navarre (970-994 AD). He married Urraca Fernández
* García Sánchez II “El Temblón” (964-1,000 AD) -King of Navarre-Nájera (994-1,000 AD). He married Jimena Fernández
* Sancho Garcés III “El Grande”-(992-1,035 AD) - King of Navarre (1,000-1,035 AD). He married in the 1st nuptials with Sancha de Aybar and in the 2nd nuptials with Muniadona de Castilla
These results mean that all the kings of the Royal Houses of Aragon, Navarra, Castilla y León and Ribagorza belonged to the R1b-M29 lineage
In Castilla y León the male line ended with the entrance of the House of Burgundy (1.126-1.389)