An interesting question was raised in a pagan forum recently: When using the term "ancestors", to whom are you referring?
My answer was not complete, but I wrote the following:
Firstly, I refer to those in my bloodline, i.e. direct ancestors such as grandparents, great-grandparents ... to that end, I undertake genealogical research as best I can.
Secondly, I refer to my bloodline clans, i.e. those with a similar surname to myself, and my paternal and maternal antecedents in Ireland, England, America, France, etc.
Thirdly, those who lived on the land of my ancestors, perhaps alongside them, especially when visiting those places.
Fourthly, those who lived on the land, where I currently reside, before me, such as the Britons, the Romans, the Angles, the Normans, and so on.
And, finally, those with whom I may have an affinity. This category I find hard to define. Another response was more erudite, referring to ancestors of "blood, place and craft", but I would redefine it to "blood, place and craft/spirituality". By craft/spirituality, I mean those who have preceded me in my endeavours. For instance, when I undertook Reiki (over a decade ago), which I consider both a craft and a spiritual calling of sorts, I always maintained images of Usui and Hawayo alongside those of my blood relations. Spiritually, I would also refer to those pagans who lived on these isles prior to the Romans. They are my spiritual ancestors. Were I an artist of any sort, I would probably consider those who had gone before as my ancestors, too, but its not really as simple as that. I wish I had the words to explain, but I don't. Perhaps others can provide the definition I find so elusive?