To Aaron & other R1b males on this forum

Hi Aaron, you seem to know a lot about the R1b Haplogroup and have probably done a lot more research on the topic than me, so can you or any other member here help me decipher this???

[by the way, my son is also a Casillas, descendant of the Casillas's in VDG, the Tepozanes line. I have gone as far as Juan Manuel Casillas y Cabrera married to Juana Maria Valdivia, but need further links to connect to El Alarife]...

Anyway, back to my DNA dilemma. Can you tell me what/where the following DNA group originated, or give me further info/links to research? I am interested in learning more about geographical locations, because we have a perfect match in Poland, and I'm wondering how that happened...thanks!

Male Y-DNA Haplotree: R1b1b2a1b surname: Reynoso (Zacatecas line)