No. Bell's father is already confirmed to be a member of the Zeus familia and they perished at the hands of the OEBD

Bell father, zald’s former comrade is confirmed deceased according to this fandom data. Bell father occupation is supporter, just like lily. Zald is one of two strongest character in that time according to the author ‘oomori, the other one is alfia, bell’s aunt and her older sister of his wife, meteria. Both of them are strongest character after albert wallenstein, who managed to drove away one eyed black dragon to the north continent.

Zald isn't Bell's father

@Angelo Gabrini sorry, I already edited my response. He is actually a former comrade of zald, a fellow familia member.