...So I am sending out a plea, to aid me in my task, does anybody else know of stories/mythology/fairy tales of house spirits/lare/wights/<insert relevant name here> who are tied to families rather than places?
Any help in my research would be gratefully recieved

To help,
There are many slavic minor deites, one closely related to home and a family/ancestoral route, kinda tagging along, was the Domovoi.
"When a new house was built, the owner would put a piece of bread down before the stove went in, to attract the domovoi. When a person moved, the coals from the stove were taken with them and the formal invitation "Domovoi, Domovoi, don't stay here. Come with our family" was recited to ensure that the Domovoi came along to the new home. Salted bread, wrapped in a white cloth will appease the domovoi as will putting clean white linen in his favorite room - an invitation to eat with the family. The domovik usually resembles a male head of household, living or dead. This supports the belief that the Domovik is a remnant from the times of ancestral worship. He can be seen if you view him through a harrow or horse collar. Otherwise, if he shows himself, it is usually to warn of death. He, like the Banshee, can be heard weeping when death approaches a member of the household." -Ainsley Friedberg
just something to add
