Asher Graff - Graff family

Asher's grandson (Shmuel Graff) was born in Iaşi, Iasi, Romania, suggesting that's where the family originated.

Zvi Hirsch Yaakov, Tova and Yosef all moved to Zichron Yaakov. Did they run the Graff hotel in Zichron at that time?

At the same time they were in Zichron, my great grandmother - Nehama Blumenfeld met her second husband who was visiting Zichron. Nechama's first husband (Moshe) died in 1893/4. DId he stay in the Graff hotel?

My grandmother, Gerda Rivkah Blumenfeld said she met her husband, Arthur Isaac Arenow via an introduction from a family friend (who I think was related to Arthur). Arthur Arenow’s mother was a Graff. It’s feasible that the family friend was a relation i.e. was a Graff family member. This suggests that the Limerick Graff family (Hyman and Barnet) are linked to the Zichron Yaakov Graff family.
There is a BIG gap between Zvi Hirsch Graff, Yosef Graff and Tova Graff. Did Asher Graff have other children – connected to Barnet and Hyman e.g. as father. (e.g. was Yehoshua Zelig Graff another son of Asher Graff and the father of Barnet, Hyman and possibly Zipporah and Yehezkel Dov?)