Don't know if you need this, but I'll post it in hopes it helps.
The ARAIZA and DELGADO families are tied via the Losano/Isla family. Specifically, Joseph Delgado's brother, Diego, was married to Ysabel Martines Losano, daughter of Cristobal Losano Martines (el viejo) and Maria de Isla, on 22 Feb. 1637 in Aguas., Aguas. (#0299421, p. 201)
Cristobal and Maria de Isla also had another daughter, (confusingly) named Maria de Isla, who married a Juan de Araisa Medina (bef. 1637). This Maria de Isla (aka de Silva, Losano) and Ysabel Martines Losano were sisters. Diego Delgado, (Ysabel's husband), was a padrino to one of Maria's children, his nephew Hernando, chr. 23 Aug. 1637 (0299421, p. 72). There were at least 9 ARAIZA children, but I don't know which one was Gines' g-parent. Yet.
Will check back to add more if I find it. Let me know if this matches your info.